|Bug: Integer overflow||A bug that causes some integer to overflow (go over what the hardware can do) producing variety of effects, commonly a kill screen, crash or something less game stopping.||1 game|
|Crippled windowed mode||Does not run in a proper windowed mode despite offering the option, commonly lacking the window deco for moving the window about and is "stuck" at some point in the display.||1 game|
|Audio format incompatibility||Games that exhibit issues of varying severity with OS audio output format (KHz and bits) set to something else than they want.||1 game|
|ffdshow incompatibility||Exhibits issues of varying severity with ffdshow installed.||1999 / 2003||4 games|
|Incompatibility: Multi-core CPU||Exhibits issues of varying severity with multicore processors (likely hangs, crashes, or abnormal performance). Usually solved by limiting the game to single core.||1999 / 2006||3 games|
|Kill screen||Reaching/entering a certain stage or level crashes the game or otherwise makes it unplayable beyond that point.||1982 / 2015||4 games|
Any bugs (defects) that appear in multiple games in more or less uniform manner.