diff --git a/code/backlog.txt b/code/backlog.txt
index 108acfdb..7529149c 100644
--- a/code/backlog.txt
+++ b/code/backlog.txt
@@ -1,3 +1,5 @@
+https://github.com/Hipnosis183/OpenSourceGames
+https://github.com/xyperia/OpenSourceGames
 http://bote.codeplex.com/
 http://crazycarscpc.free.fr/
 http://freshmeat.sourceforge.net/tags/turn-based-strategy (good for older ones)
@@ -11,6 +13,7 @@ http://www.silversecond.com/WolfRPGEditor/
 http://www.spheredev.org/
 http://www.usgo.org/go-software
 http://www.vbgore.com/Main_Page
+https://github.com/SerpentAI/SerpentAI
 http://www.zsnes.com/ (emulator/platform)
 https://001gamecreator.com/
 https://agateau.com/games/
diff --git a/code/maintenance_entries.py b/code/maintenance_entries.py
index 7975b4af..57b47815 100644
--- a/code/maintenance_entries.py
+++ b/code/maintenance_entries.py
@@ -311,7 +311,7 @@ def check_external_links(self):
         'https://git.xiph.org/vorbis.git', 'http://svn.uktrainsim.com/svn/openrails', 'https://www.srb2.org/',
         'http://wiki.srb2.org/', 'https://web.archive.org/web/', 'https://www.comunidadargentum.com/',
         'http://www.argentumonline.com.ar/', 'https://www.atrinik.org/', 'https://mvnrepository.com/artifact/com.gitlab.bsarter.belote',
-        'http://aegidian.org/bb/index.php', 'https://code.ur.gs/lupine/ordoor')
+        'http://aegidian.org/bb/index.php', 'https://code.ur.gs/lupine/ordoor', 'https://git.tartarus.org/simon/puzzles')
         # especially the webarchive links will be checked separately
 
         # some do redirect, but we nevertheless want the original URL in the database
diff --git a/code/synchronization/github_import.py b/code/synchronization/github_import.py
index f0168aef..267990ca 100644
--- a/code/synchronization/github_import.py
+++ b/code/synchronization/github_import.py
@@ -21,9 +21,10 @@
               'http:\\www.vampier.net': 'https://www.vampier.net/'}
 ignored_blogs = ('https://uto.io', r'https://¯\_(°_o)_/¯')
 
-ignored_languages = ('CSS', 'HTML', 'CMake', 'XSLT', 'ShaderLab', 'Shell')
+ignored_languages = ('CSS', 'HTML', 'CMake', 'XSLT', 'ShaderLab', 'Shell', 'Roff')
 language_aliases = {'VBA': 'Visual Basic', 'Common Lisp': 'Lisp', 'Game Maker Language': 'Game Maker Script',
-                    'NewLisp': 'Lisp', 'Awk': 'AWK', 'Visual Basic': 'Basic', 'FreeBasic': 'Basic'}
+                    'NewLisp': 'Lisp', 'Awk': 'AWK', 'Visual Basic': 'Basic', 'FreeBasic': 'Basic',
+                    'Visual Basic 6.0': 'Visual Basic', 'Vue': 'JavaScript'}
 
 # these gave some errors (but you may try them again or remove them from this list)
 ignored_repos = ('https://github.com/jtc0de/Blitwizard.git',
diff --git a/code/utils/constants.py b/code/utils/constants.py
index d46c57c3..80232855 100644
--- a/code/utils/constants.py
+++ b/code/utils/constants.py
@@ -84,7 +84,7 @@ def get_config(key):
 # interesting keywords = recommend keywords + some popular keywords
 interesting_keywords = recommended_keywords + ('2D', '3D', 'clone', 'first-person', 'real-time', 'roguelike', 'shooter', 'space', 'turn-based', 'for kids', 'for adults')
 
-# non game keywords take precedence over other (game) recommended keywords, at most one of them per entry
+# non-game keywords take precedence over other (game) recommended keywords, at most one of them per entry
 non_game_keywords = ('framework', 'game engine', 'library', 'tool')
 
 # known programming languages, anything else will result in a warning during a maintenance operation
@@ -146,7 +146,8 @@ def get_config(key):
     'Vala': 'https://en.wikipedia.org/wiki/Vala_(programming_language)',
     'Visual Basic': 'https://en.wikipedia.org/wiki/Visual_Basic',
     'XUL': 'https://en.wikipedia.org/wiki/XUL',
-    'ZenScript': 'https://github.com/CraftTweaker/ZenScript'
+    'ZenScript': 'https://github.com/CraftTweaker/ZenScript',
+    'Zig': 'https://en.wikipedia.org/wiki/Zig_(programming_language)'
 }
 
 known_languages = tuple(sorted(list(language_urls.keys()), key=str.casefold)) + ('None', '?')
diff --git a/entries/antichess.md b/entries/antichess.md
index 8083b691..86692372 100644
--- a/entries/antichess.md
+++ b/entries/antichess.md
@@ -5,7 +5,7 @@
 - Download: https://sourceforge.net/projects/antichess/files/antichess/1.0/
 - Platform: Windows, Linux, macOS
 - Keyword: strategy, chess
-- Code repository: https://gitlab.com/osgames/antichess.git (backup of cvs, @created 2018, @stars 1, @forks 0), http://antichess.cvs.sourceforge.net/ (cvs)
+- Code repository: https://gitlab.com/Trilarion/antichess.git (backup of cvs, @created 2018, @stars 1, @forks 0), http://antichess.cvs.sourceforge.net/ (cvs)
 - Code language: Java
 - Code license: MIT
 - Developer: Baris Yuksel, Hongping Lim, Hooria Komal, Tamer Karatekin
diff --git a/entries/argentum_online.md b/entries/argentum_online.md
index 43e1dffa..eee70457 100644
--- a/entries/argentum_online.md
+++ b/entries/argentum_online.md
@@ -5,7 +5,7 @@
 - Download: https://github.com/ao-libre/ao-cliente/releases, https://sourceforge.net/projects/morgoao/files/
 - Keyword: role playing, 2D, multiplayer online + massive
 - Code repository: https://github.com/ao-libre/ao-server.git (@created 2018, @stars 51, @forks 44), https://github.com/ao-libre/ao-cliente.git @add (@created 2018, @stars 62, @forks 76), https://github.com/ao-libre/ao-worldeditor.git @add (@created 2020, @stars 5, @forks 11), http://morgoao.cvs.sourceforge.net/ (cvs)
-- Code language: Visual Basic, Visual Basic 6.0
+- Code language: Visual Basic
 - Code license: GPL-2.0, AGPL-3.0
 - Developer: abusiv0, Alejandro Santos, Alexis Caraballo, Amraphen, AOSecProj, Borouse, BoxStar, BrianPr, cucsijuan, Cuicui, Facundo Román, Fakkerz, Franco Benito, FrancoBenito, Fredy Treboux, Gexur, Ignacio Arminas, Joaquín, Jotabe, Juan Dalmasso, Juan Martín Sotuyo Dodero, Juanmz, Lautaro Marino, Leandro Mendoza, LoreleiArgAoLibre, Lucas, Lucas Recoaro, Luciano Contartese, Marco Vanotti, Mateo, Mauro Segoviano, Natanael Andrés Garrido, Neox189, Pablo Duval, Pablo Ignacio Márquez, Pato, Pato Torres, pLuS, Redroot, ReyarB, Ronin, Samuel Fernandez, Walter Gonzalez, WalterSit0, Zaxtor
 
diff --git a/entries/atlantis.md b/entries/atlantis.md
index 1790fddd..d2c5bb1c 100644
--- a/entries/atlantis.md
+++ b/entries/atlantis.md
@@ -5,7 +5,7 @@
 - State: mature, inactive since 2016
 - Keyword: framework
 - Code repository: https://github.com/Atlantis-PBEM/Atlantis.git (@created 2011, @stars 53, @forks 37), https://svn.code.sf.net/p/atlantis/code (svn)
-- Code language: C++, Roff
+- Code language: C++
 - Code license: GPL-2.0
 - Developer: Artem Trytiak, Enno Rehling, JT Traub, Loria, Loriaki, Stephen Baillie, T Gerigk
 
diff --git a/entries/open_apocalypse.md b/entries/open_apocalypse.md
index e5a86c11..0572e02b 100644
--- a/entries/open_apocalypse.md
+++ b/entries/open_apocalypse.md
@@ -1,9 +1,9 @@
 # Open Apocalypse
 
-- Home: https://openapoc.org/
+- Home: https://web.archive.org/web/20221102224915/https://openapoc.org/
 - Inspiration: X-COM: Apocalypse, X-COM: Terror from the Deep, X-COM: UFO Defense
 - State: beta
-- Download: https://ci.appveyor.com/project/openapoc/openapoc
+- Download: https://github.com/OpenApoc/OpenApoc/releases
 - Keyword: remake, strategy, "content commercial + original required (X-Com Apocalypse)"
 - Code repository: https://github.com/OpenApoc/OpenApoc.git (@created 2014, @stars 475, @forks 96)
 - Code language: C++
diff --git a/entries/open_flood.md b/entries/open_flood.md
index 1966827b..9fd54019 100644
--- a/entries/open_flood.md
+++ b/entries/open_flood.md
@@ -2,7 +2,7 @@
 
 - Home: https://github.com/GunshipPenguin/open_flood
 - State: mature, inactive since 2018
-- Download: https://play.google.com/store/apps/details?id=com.gunshippenguin.openflood, https://f-droid.org/packages/com.gunshippenguin.openflood/
+- Download: https://f-droid.org/packages/com.gunshippenguin.openflood/
 - Platform: Android
 - Keyword: puzzle
 - Code repository: https://github.com/GunshipPenguin/open_flood.git (@created 2016, @stars 131, @forks 67)
diff --git a/entries/open_rails.md b/entries/open_rails.md
index 2b8f3b5b..18ed7a04 100644
--- a/entries/open_rails.md
+++ b/entries/open_rails.md
@@ -1,9 +1,9 @@
 # Open Rails
 
-- Home: http://openrails.org/
+- Home: https://www.openrails.org/
 - Inspiration: Microsoft Train Simulator
 - State: mature
-- Download: http://openrails.org/download/program/
+- Download: https://www.openrails.org/download/program/
 - Keyword: simulation, clone
 - Code repository: http://svn.uktrainsim.com/svn/openrails (svn active)
 - Code language: C#
@@ -13,4 +13,4 @@ Train simulator for the largest collection of digital content in the world - rou
 
 ## Building
 
-- Build instruction: [Developer guide](http://openrails.org/contribute/developing-code/)
+- Build instruction: [Developer guide](https://www.openrails.org/contribute/developing-code/)
diff --git a/entries/open_rpg_maker.md b/entries/open_rpg_maker.md
index 8db4fe84..3cdceae9 100644
--- a/entries/open_rpg_maker.md
+++ b/entries/open_rpg_maker.md
@@ -1,8 +1,8 @@
 # Open RPG Maker
 
-- Home: https://openrpgmaker.sourceforge.net/, https://sourceforge.net/projects/openrpgmaker/
+- Home: https://web.archive.org/web/20230910012848/https://openrpgmaker.sourceforge.net/, https://sourceforge.net/projects/openrpgmaker/
 - State: beta, inactive since 2014
-- Download: https://openrpgmaker.sourceforge.net/wiki/index.php/Download, https://sourceforge.net/projects/openrpgmaker/files/
+- Download: https://sourceforge.net/projects/openrpgmaker/files/
 - Keyword: framework, role playing, 2D
 - Code repository: https://gitlab.com/osgames/openrpgmaker.git (snapshot of source releases, @created 2018, @stars 2, @forks 0)
 - Code language: C++
diff --git a/entries/open_rsc.md b/entries/open_rsc.md
index b423415c..65cc49b6 100644
--- a/entries/open_rsc.md
+++ b/entries/open_rsc.md
@@ -1,6 +1,6 @@
 # Open RSC
 
-- Home: https://rsc.vet/, https://runescapeclassic.dev/, https://web.archive.org/web/20200510133848/https://openrsc.com/
+- Home: https://rsc.vet/, https://web.archive.org/web/20210605191850/https://runescapeclassic.dev/, https://web.archive.org/web/20200510133848/https://openrsc.com/
 - Inspiration: Runescape Classic
 - State: mature
 - Platform: Windows, Linux, macOS, Android
diff --git a/entries/openfly.md b/entries/openfly.md
index 82d2247d..96bdf432 100644
--- a/entries/openfly.md
+++ b/entries/openfly.md
@@ -1,6 +1,6 @@
 # OpenFly
 
-- Home: http://ariel.ucs.unimelb.edu.au/~gjo/
+- Home: https://web.archive.org/web/20220330013747/http://ariel.ucs.unimelb.edu.au/~gjo/
 - Inspiration: Flight Sim Toolkit
 - State: beta, inactive since 2001
 - Keyword: remake, simulation, content open
diff --git a/entries/openkrush.md b/entries/openkrush.md
index 53c161fc..e56e0c69 100644
--- a/entries/openkrush.md
+++ b/entries/openkrush.md
@@ -1,6 +1,6 @@
 # OpenKrush
 
-- Home: https://www.kknd-game.com/index.php
+- Home: https://github.com/IceReaper/OpenKrush
 - Media: https://en.wikipedia.org/wiki/KKnD_(video_game)#Open_source_remake
 - Inspiration: Krush Kill 'n' Destroy
 - State: beta
diff --git a/entries/openlierox.md b/entries/openlierox.md
index 369f10f7..f0f8d84a 100644
--- a/entries/openlierox.md
+++ b/entries/openlierox.md
@@ -3,10 +3,10 @@
 - Home: https://www.openlierox.net/
 - Inspiration: Liero, Worms
 - State: mature
-- Download: https://www.openlierox.net/downloads/, https://sourceforge.net/projects/openlierox/files/
+- Download: https://www.openlierox.net/downloads/, https://sourceforge.net/projects/openlierox/files/ (@old)
 - Platform: Windows
 - Keyword: action, arcade, remake
-- Code repository: https://github.com/albertz/openlierox.git (@created 2011, @stars 253, @forks 59), https://git.code.sf.net/p/openlierox/code
+- Code repository: https://github.com/albertz/openlierox.git (@created 2011, @stars 253, @forks 59), https://git.code.sf.net/p/openlierox/code (@old)
 - Code language: C++
 - Code license: LGPL-2.0
 - Developer: Albert Zeyer, Karel Petránek, lxkurko, Martin Erik Werner, Olof Larsson, Sergii Pylypenko, yuri
diff --git a/entries/openmw.md b/entries/openmw.md
index a8d25f4f..acc4f863 100644
--- a/entries/openmw.md
+++ b/entries/openmw.md
@@ -1,6 +1,6 @@
 # OpenMW
 
-- Home: http://openmw.org/en/
+- Home: https://openmw.org/
 - Media: https://en.wikipedia.org/wiki/OpenMW
 - Inspiration: The Elder Scrolls III: Morrowind
 - State: mature
@@ -14,4 +14,6 @@
 Unofficial open source engine reimplementation of the game Morrowind.
 See also [OpenMW on Android](openmw_for_android.md)
 
+Also see https://f-droid.org/de/packages/com.libopenmw.openmw/ or https://github.com/OpenMW/android-port
+
 ## Building
diff --git a/entries/openmw_for_android.md b/entries/openmw_for_android.md
index 7e958801..4b536d8d 100644
--- a/entries/openmw_for_android.md
+++ b/entries/openmw_for_android.md
@@ -3,7 +3,7 @@
 - Home: https://omw.xyz.is/
 - Inspiration: The Elder Scrolls III: Morrowind
 - State: mature
-- Download: https://play.google.com/store/apps/details?id=is.xyz.omw, https://f-droid.org/packages/is.xyz.omw/
+- Download: https://f-droid.org/packages/is.xyz.omw/
 - Platform: Android
 - Keyword: remake, content commercial
 - Code repository: https://github.com/xyzz/openmw-android.git (@archived, @created 2018, @stars 312, @forks 91)
diff --git a/entries/openomf.md b/entries/openomf.md
index 7ce65cfc..afee227c 100644
--- a/entries/openomf.md
+++ b/entries/openomf.md
@@ -4,8 +4,8 @@
 - Media: https://en.wikipedia.org/wiki/One_Must_Fall:_2097#Legacy
 - Inspiration: One Must Fall: 2097
 - State: beta
-- Download: https://www.openomf.org/downloads/, https://github.com/omf2097/openomf/releases
-- Platform: Windows, Linux
+- Download: https://github.com/omf2097/openomf/releases
+- Platform: Windows, Linux, macOS
 - Keyword: action, remake, "content commercial (?) + open (?) + original required"
 - Code repository: https://github.com/omf2097/openomf.git (@created 2013, @stars 339, @forks 34)
 - Code language: C, C++
diff --git a/entries/openrpg.md b/entries/openrpg.md
index 0cc89522..e7c577f1 100644
--- a/entries/openrpg.md
+++ b/entries/openrpg.md
@@ -1,6 +1,6 @@
 # OpenRPG
 
-- Home: http://www.rpgobjects.com/index.php?c=orpg, https://app.assembla.com/spaces/openrpg/, https://sourceforge.net/projects/openrpg/, https://app.assembla.com/wiki/show/traipse
+- Home: http://www.rpgobjects.com/index.php?c=orpg, https://app.assembla.com/spaces/openrpg/wiki, https://sourceforge.net/projects/openrpg/, https://app.assembla.com/wiki/show/traipse
 - State: mature, inactive since 2013
 - Download: http://www.rpgobjects.com/index.php?c=orpg&m=getorpg, https://sourceforge.net/projects/openrpg/files/
 - Keyword: framework, role playing
diff --git a/entries/openspades.md b/entries/openspades.md
index cf7005e4..4102aceb 100644
--- a/entries/openspades.md
+++ b/entries/openspades.md
@@ -1,6 +1,6 @@
 # OpenSpades
 
-- Home: http://openspades.yvt.jp/, https://sites.google.com/a/yvt.jp/openspades/
+- Home: http://openspades.yvt.jp/, https://web.archive.org/web/20221211050432/https://sites.google.com/a/yvt.jp/openspades/
 - Inspiration: Ace of Spades
 - State: beta
 - Download: https://github.com/yvt/openspades/releases
diff --git a/entries/openxray.md b/entries/openxray.md
index 5d81ba45..99eef427 100644
--- a/entries/openxray.md
+++ b/entries/openxray.md
@@ -1,6 +1,6 @@
 # OpenXRay
 
-- Home: https://discord.gg/sjRMQwv
+- Home: https://github.com/OpenXRay/xray-16
 - Inspiration: S.T.A.L.K.E.R: Call of Pripyat
 - State: mature
 - Keyword: action, game engine, remake, content commercial + original required, multiplayer Online + LAN
diff --git a/entries/other-life.md b/entries/other-life.md
index 2e00447e..33ebd4d9 100644
--- a/entries/other-life.md
+++ b/entries/other-life.md
@@ -11,6 +11,5 @@
 - Developer: Alexander Gottwald, Felix Janda, Gé Vissers, Joe "Flame" Sullivan, Karol, "Paul Broadhead (bluap in EL)", Sir-Odie, xaphier
 
 Mainly a client to connect to Eternal Lands?
-Was described at https://en.wikipedia.org/wiki/Eternal_Lands#Spin-offs but not included on that page anymore.
 
 ## Building
diff --git a/entries/parpg.md b/entries/parpg.md
index 13ca366e..38ee71dd 100644
--- a/entries/parpg.md
+++ b/entries/parpg.md
@@ -1,9 +1,9 @@
 # PARPG
 
-- Home: http://blog.parpg.net/, https://sourceforge.net/projects/parpg/
+- Home: https://web.archive.org/web/20200710221424/http://blog.parpg.net/, https://sourceforge.net/projects/parpg/
 - Inspiration: Fallout 2
 - State: beta, inactive since 2012
-- Download: http://blog.parpg.net/download/, http://wiki.parpg.net/Download
+- Download: https://sourceforge.net/projects/parpg/files/
 - Keyword: remake, role playing
 - Code repository: https://gitlab.com/osgames/parpg-core.git (@created 2019, @stars 1, @forks 0), https://subversion.assembla.com/svn/parpg-assets/ (svn), http://parpg-trac.cvsdude.com/parpg/browser (svn)
 - Code language: Python
@@ -17,4 +17,4 @@ See also: https://github.com/arikel/PPARPG, https://github.com/mvbarracuda/parpg
 
 ## Building
 
-See <http://wiki.parpg.net/Department:Programming>
\ No newline at end of file
+See <https://web.archive.org/web/20191002025843/http://wiki.parpg.net/Department:Programming>
\ No newline at end of file
diff --git a/entries/pathological.md b/entries/pathological.md
index 2d304f81..890541cc 100644
--- a/entries/pathological.md
+++ b/entries/pathological.md
@@ -1,6 +1,6 @@
 # Pathological
 
-- Home: https://pathological.sourceforge.net/, https://sourceforge.net/projects/pathological/
+- Home: https://web.archive.org/web/20221116092622/https://pathological.sourceforge.net/, https://sourceforge.net/projects/pathological/
 - Inspiration: Log!cal
 - State: beta, inactive since 2003
 - Keyword: puzzle, remake
diff --git a/entries/pcexhumed.md b/entries/pcexhumed.md
index 5206dd73..f680c741 100644
--- a/entries/pcexhumed.md
+++ b/entries/pcexhumed.md
@@ -1,8 +1,10 @@
 # PCExhumed
 
-- Home: https://lerppu.net/wannabethesis/, http://pcex.retrohost.net/
+- Home: http://pcex.retrohost.net/
 - Inspiration: Powerslave
 - State: beta
+- Download: https://github.com/nukeykt/NBlood/releases/
+- Platform: Windows
 - Keyword: action, remake, content commercial
 - Code repository: https://github.com/nukeykt/NBlood.git (@created 2019, @stars 542, @forks 76)
 - Code language: C++
diff --git a/entries/potato_killer.md b/entries/potato_killer.md
index 5fc65761..2a62d7c4 100644
--- a/entries/potato_killer.md
+++ b/entries/potato_killer.md
@@ -1,6 +1,6 @@
 # Potato Killer
 
-- Home: https://sites.google.com/site/kuviman/
+- Home: https://web.archive.org/web/20220813200731/https://sites.google.com/site/kuviman/
 - State: beta, inactive since 2011
 - Download: https://code.google.com/archive/p/kuviman/downloads
 - Keyword: action, content open, first-person, shooter
diff --git a/entries/pretend_youre_xyzzy.md b/entries/pretend_youre_xyzzy.md
index 5f5617fa..d6e63259 100644
--- a/entries/pretend_youre_xyzzy.md
+++ b/entries/pretend_youre_xyzzy.md
@@ -1,6 +1,6 @@
 # Pretend You're Xyzzy
 
-- Home: https://pretendyoure.xyz/zy
+- Home: https://pretendyoure.xyz/zy/
 - Inspiration: Cards Against Humanity
 - State: mature, inactive since 2020
 - Play: https://xyzzy.clrtd.com/zy/game.jsp
diff --git a/entries/pushover.md b/entries/pushover.md
index 1c78641b..91b6ebdf 100644
--- a/entries/pushover.md
+++ b/entries/pushover.md
@@ -1,11 +1,12 @@
 # Pushover
 
-- Home: https://pushover.github.io/, https://sourceforge.net/projects/pushover/
+- Home: https://domino-chain.gitlab.io/, https://sourceforge.net/projects/pushover/ (@old)
 - Inspiration: Pushover
-- State: beta, inactive since 2018
-- Download: https://sourceforge.net/projects/pushover/files/
+- State: beta
+- Download: https://domino-chain.gitlab.io/#install
+- Platform: Windows, Linux, macOS
 - Keyword: puzzle, remake
-- Code repository: https://github.com/pushover/pushover.github.io.git (@archived, @created 2018, @stars 17, @forks 2)
+- Code repository: https://gitlab.com/domino-chain/domino-chain.gitlab.io.git, https://github.com/pushover/pushover.github.io.git (@old, @archived, @created 2018, @stars 17, @forks 2)
 - Code language: C++, C, Lua
 - Code license: GPL-3.0
 - Developer: Andreas Röver, Volker Diels-Grabsch, Wojtek Dabrowski
diff --git a/entries/qonk.md b/entries/qonk.md
index 766c8867..aba11bfb 100644
--- a/entries/qonk.md
+++ b/entries/qonk.md
@@ -1,6 +1,6 @@
 # Qonk
 
-- Home: https://scratchpad.fandom.com/wiki/Qonk, https://sourceforge.net/projects/qonk/, http://anthony.liekens.net/index.php/Computers/Qonk
+- Home: https://scratchpad.fandom.com/wiki/Qonk, https://sourceforge.net/projects/qonk/, https://web.archive.org/web/20221206044255/http://anthony.liekens.net/index.php/Computers/Qonk
 - State: beta, inactive since 2008
 - Download: https://sourceforge.net/projects/qonk/files/
 - Keyword: strategy, real-time
diff --git a/entries/quad-engine.md b/entries/quad-engine.md
index b8f2e3f8..7302a4bc 100644
--- a/entries/quad-engine.md
+++ b/entries/quad-engine.md
@@ -1,10 +1,9 @@
 # Quad-engine
 
-- Home: http://quad-engine.com/
+- Home: https://web.archive.org/web/20220128195116/http://quad-engine.com/
 - State: beta
-- Download: http://quad-engine.com/downloads.html
 - Keyword: framework
-- Code repository: https://bitbucket.org/Darthman/quad/src (hg)
+- Code repository: https://github.com/EliiahPro/quad-engine.git, https://bitbucket.org/Darthman/quad/src (hg)
 - Code language: Pascal
 - Code license: MIT
 
diff --git a/entries/race_into_space.md b/entries/race_into_space.md
index 3f15b175..05841c19 100644
--- a/entries/race_into_space.md
+++ b/entries/race_into_space.md
@@ -1,6 +1,6 @@
 # Race Into Space
 
-- Home: http://www.raceintospace.org/, https://sourceforge.net/projects/raceintospace/
+- Home: https://web.archive.org/web/20210102172520/http://www.raceintospace.org/, https://sourceforge.net/projects/raceintospace/
 - Media: https://en.wikipedia.org/wiki/Buzz_Aldrin%27s_Race_Into_Space#Source_code_release
 - Inspiration: Buzz Aldrin's Race Into Space
 - State: mature
diff --git a/entries/residualvm.md b/entries/residualvm.md
index a9dc5c27..a13d04e7 100644
--- a/entries/residualvm.md
+++ b/entries/residualvm.md
@@ -3,7 +3,7 @@
 - Home: https://www.residualvm.org/
 - Inspiration: Escape from Monkey Island, Grim Fandango, Myst III: Exile
 - State: beta
-- Download: https://www.residualvm.org/downloads/
+- Download: https://web.archive.org/web/20210722121452/https://www.residualvm.org/downloads/
 - Platform: Windows, macOS
 - Keyword: adventure, game engine, remake, content commercial + original required
 - Code repository: https://github.com/residualvm/residualvm.git (@archived, @created 2011, @stars 396, @forks 115)
diff --git a/entries/rolisteam.md b/entries/rolisteam.md
index 109e6403..332b14b0 100644
--- a/entries/rolisteam.md
+++ b/entries/rolisteam.md
@@ -1,11 +1,11 @@
 # Rolisteam
 
-- Home: http://www.rolisteam.org/, https://sourceforge.net/projects/rolisteam/
+- Home: https://rolisteam.org/, https://sourceforge.net/projects/rolisteam/
 - State: mature
-- Download: http://www.rolisteam.org/download.html, https://sourceforge.net/projects/rolisteam/files
+- Download: https://rolisteam.org/download.html, https://sourceforge.net/projects/rolisteam/files
 - Platform: Windows, Linux, macOS
 - Keyword: tool
-- Code repository: https://github.com/Rolisteam/rolisteam.git (https://github.com/Rolisteam, @created 2015, @stars 184, @forks 28)
+- Code repository: https://github.com/Rolisteam/rolisteam.git (@created 2015, @stars 184, @forks 28)
 - Code language: C++, JavaScript
 - Code license: GPL-2.0
 - Developer: Alci, obiwankennedy, Renaud G., Tomaz Canabrava
diff --git a/entries/rpg-x.md b/entries/rpg-x.md
index 835e6c0f..397b4af5 100644
--- a/entries/rpg-x.md
+++ b/entries/rpg-x.md
@@ -1,9 +1,9 @@
 # RPG-X
 
-- Home: http://www.last-outpost.net/rpg-x/, https://web.archive.org/web/20130126113126/http://rpgxef.hennecke-online.net/
+- Home: https://rpg-x.com/, https://web.archive.org/web/20130126113126/http://rpgxef.hennecke-online.net/
 - Inspiration: Star Trek: Voyager – Elite Force
 - State: mature, inactive since 2015
-- Download: https://github.com/UberGames/rpgxEF/releases
+- Download: https://last-outpost.net/dl, https://github.com/UberGames/rpgxEF/releases
 - Platform: Windows, Linux
 - Keyword: remake, shooter, space
 - Code repository: https://github.com/UberGames/rpgxEF.git (@created 2011, @stars 17, @forks 10)
diff --git a/entries/sandbox_game_maker.md b/entries/sandbox_game_maker.md
index 5f3a854b..a96f5200 100644
--- a/entries/sandbox_game_maker.md
+++ b/entries/sandbox_game_maker.md
@@ -1,6 +1,6 @@
 # sandbox Game Maker
 
-- Home: https://www.sandboxgamemaker.com/free-game-maker/
+- Home: https://www.sandboxgamemaker.com/category/free-game-maker-news/
 - State: mature, inactive since 2014
 - Download: https://www.sandboxgamemaker.com/free-game-maker-download/
 - Keyword: framework
diff --git a/entries/sdl_sopwith.md b/entries/sdl_sopwith.md
index 3162371f..15394532 100644
--- a/entries/sdl_sopwith.md
+++ b/entries/sdl_sopwith.md
@@ -1,12 +1,12 @@
 # SDL Sopwith
 
-- Home: https://sdl-sopwith.sourceforge.net/, https://sourceforge.net/projects/sdl-sopwith/
+- Home: https://fragglet.github.io/sdl-sopwith/, https://sourceforge.net/projects/sdl-sopwith/ (@old)
 - Inspiration: Sopwith
 - State: mature, inactive since 2014
-- Download: https://sourceforge.net/projects/sdl-sopwith/files/
+- Download: https://fragglet.github.io/sdl-sopwith/getit.html, https://sourceforge.net/projects/sdl-sopwith/files/ (@old)
 - Platform: Linux
 - Keyword: action, remake, flight
-- Code repository: https://gitlab.com/osgames/sdl-sopwith.git (import of svn, @created 2019, @stars 1, @forks 0), https://svn.code.sf.net/p/sdl-sopwith/code (svn)
+- Code repository: https://github.com/fragglet/sdl-sopwith.git, https://gitlab.com/osgames/sdl-sopwith.git (import of svn, @created 2019, @stars 1, @forks 0), https://svn.code.sf.net/p/sdl-sopwith/code (svn)
 - Code language: C, C++
 - Code license: GPL-2.0
 - Code dependency: SDL
diff --git a/entries/seven_kingdoms_ancient_adversaries.md b/entries/seven_kingdoms_ancient_adversaries.md
index fa367f57..11a2eaa2 100644
--- a/entries/seven_kingdoms_ancient_adversaries.md
+++ b/entries/seven_kingdoms_ancient_adversaries.md
@@ -4,7 +4,7 @@
 - Media: https://en.wikipedia.org/wiki/Seven_Kingdoms_(video_game)#Open_source_project
 - Inspiration: Seven Kingdoms: Ancient Adversaries
 - State: mature
-- Download: https://www.7kfans.com/wiki/index.php/Download, https://sourceforge.net/projects/skfans/files/, https://github.com/the3dfxdude/7kaa/releases
+- Download: https://www.7kfans.com/download/, https://sourceforge.net/projects/skfans/files/, https://github.com/the3dfxdude/7kaa/releases
 - Platform: Windows, Linux
 - Keyword: remake, strategy, real-time
 - Code repository: https://github.com/the3dfxdude/7kaa.git (@archived, @created 2013, @stars 251, @forks 70)
diff --git a/entries/spelling_bee.md b/entries/spelling_bee.md
index 59d15632..a6c3e537 100644
--- a/entries/spelling_bee.md
+++ b/entries/spelling_bee.md
@@ -5,7 +5,7 @@
 - State: mature
 - Keyword: puzzle, clone
 - Code repository: https://github.com/ConorSheehan1/spelling-bee.git (@created 2022, @stars 36, @forks 21)
-- Code language: JavaScript, TypeScript, Vue
+- Code language: JavaScript, TypeScript
 - Code license: MIT
 - Developer: Conor Sheehan