Gunman's Proof

Gunman's Proof is a vaguely Zelda-like ARPG set in the Wild West, with humor reminiscent of the Mother series.

This said, it came out relatively late in the Super Famicom's lifespan. This, coupled with ASCII's imminent demise, probably played a part in its lack of an international release.

"Ln-MOS version 3.1"
For some reason, the game has a bit of unreachable code to display a fake DOS-like boot sequence, which imitates a computer's self test and then prints a fictitious directory listing, consisting mostly of the same few file names repeated several times, before going into an infinite loop.

The display is surprisingly polished for what seems to be no more than a strange disabled Easter egg, even including a simulated CRT-esque "rolling line" effect in the background. The significance, if any, of the file names and (obviously bogus) dates is unknown, as the entire output is hardcoded and does not correspond to any actual contents of the game's ROM.

This strange scene can be seen on startup using Pro Action Replay codes.

Debug Leftover
Evidence suggests a fairly large chunk of debug code was once present on the cartridge. The first 20 kilobytes of the ROM (mapped to SNES addresses -) is empty. On boot, if the cartridge's internal checksum is, the game will attempt to fill most of that empty space with code and data beginning at SNES address , which is located just after the end of the final game's ROM.

The game will then try to execute this code. However, even if the code were still present, the game would be attempting to load it into an area of memory that is read-only on a real SNES cartridge, resulting in a crash when executing it.