Thanks for your interest in making custom content for Lingo 2! You'll find here a slightly modified version of the Lingo 2 code base, with most scenes and songs removed and a few of the files changed. Once you've finished and are ready to publish, you should also check it in the main Lingo 2 game, to make sure it works how you expect it to. Please join our Discord for more information.
Use Godot 4.3 with SteamWorks to test your builds.
Load your maps into your Game Data > maps folder, then select them in Level Select. You may find other/better/easier ways to test, but this method is how players will access your content (at least for now, until we have Workshop).