Impossible Mission is a video game for several home computers. The original version for the Commodore 64 was programmed by Dennis Caswell and published by Epyx in 1984. The game features a variety of gameplay mechanics, from platform, adventure and action games and boasted novel features for the time, such as digitized speech. Impossible Mission, which casts the player in the role of a secret agent infiltrating an enemy stronghold, is widely considered one of the best games for several platforms and inspired sequels, remakes and numerous ports.