itch.io

Unity games usually ship out with all the game code in Mono/DotNet (unless you switch it to compiled, which can have issues). I usually edit the game code directly with dnSpy for small mods like that, though that's a bit rough for distributing mods. For distributing stuff it's usually better to make something cleaner using one of the Unity modding frameworks, like BepInEx.

Very good game so far (played all the way to the slime boss, can't come up from down there, but I think that's all for now?)

Some notes:

• The escape struggle is a bit too heavy on the RNG for the times each key stays in, if it cycles too fast you simply can't escape. I've escaped in as little as 2 mana bar charges, and as many as 20+... I modded the game increasing the minimum time from 0.75s to 1.5s and it improved that a lot. probably 1s is a reasonable min, or be a bit more forgiving on the decay time.
• Had issues with scene transition leaving you "floating" stuck on the ceiling on the narrower corridors, and going up on transitions fails a lot as well.

Area 3 is just a 3x3 sliding puzzle, search for it for how to solve. The side shows the way it should look at the end (circle in the center, arrows pointing in and vacant space on bottom-right)

From the entry point: Left, Up, Left, Down, Left, Up, Right, Up, Left, Down, Left, Down, Right, Up, Right

Very well made! But a bit on the short side with 4 puzzle types and about 3~4 variants of each...

Finished in about ~20 mins with all endings (unless there's some secret somewhere)