ROM

A ROM (ISO for disc-based systems) is the entire source code of a game. They are considered illegal, as they are distributed without payment or permission to their originating companies. Like most of the Internet, MFGG (both site and forums) prohibits posting of or otherwise giving links to ROMs. However, discussion about them is allowed provided that no links or files are given.

ROM hacks are allowed to be posted, as they only contain changes that need to be made to a ROM, not the code itself. Also allowed are resources like ripped graphics and sounds. Emulators can also posted or links given to them, as they are completely reverse-engineered. However, if the emulator requires a BIOS, the BIOS may not be posted as it counts as a ROM itself.

Emulation is important for fangamers; resources such as graphics and sounds, and other things like the engine physics and features are the basis of many fangames. However, this adds to the "gray area" associated with fangames and other fan works.