Within the game's source code, developer notes (comments) often explain how a cheat functions or warn other programmers about potential crashes if a specific cheat is activated. Notable Examples
Developers used these shortcuts to isolate bugs in specific environments without needing to meet difficult gameplay requirements. Key Characteristics Cheat Developer Notes:
Many "Developer Notes" evolved into hardcoded button combinations (like the famous Konami Code) that remained in the final retail version of the game. Within the game's source code, developer notes (comments)
These notes/codes allowed testers to skip levels, toggle invincibility, or spawn items instantly. Within the game's source code
Originally a developer tool for Gradius on the NES because the game was too difficult for the creator to finish while testing.