When you buy Hollow Knight , Among Us , or Subnautica on Steam, you do not own the source code. You own a license to play the compiled executable (the .exe file). The C# scripts inside a Unity game can be reverse-engineered because Unity compiles to IL (Intermediate Language) code. Tools like dnSpy or ILSpy can decompile a finished game back into readable C# code.
Open the project, then delete all the art, sound, and UI files. What remains? The scripts. If the game still compiles (it won't), you have pure code. (It won't compile—this teaches you about dependencies). download unity game source code free
This is what you actually want. This includes the .cs files (scripts), the .unity scenes, prefabs, shaders, and assets that make up a specific game. This is what this post is about. Part 2: The Legal Reality Check Before you click any links, understand this: The vast majority of commercial Unity games are closed-source. When you buy Hollow Knight , Among Us
Now close this post, open GitHub, search for Unity MIT license , and start reading. Your journey begins now. Tools like dnSpy or ILSpy can decompile a