The first Jeopardy! video game was released by Coleco in 1984 in versions for four different systems: Coleco Adam, Apple II, Commodore-64 and IBM PC/PCjr. It was distinguished by a carefully designed spelling interpreter that could accept some misspellings or typos, thereby not punishing players for their lack of spelling or typing skills. After Coleco's demise, successor companies which distributed the game erroneously referred the acceptance of misspelled or mistyped answers as a bug.