Complex sentence: Garry Kitchen (born 1958) is a programmer and game designer known for "Garry Kitchen's GameMaker" for the Commodore 64, the Atari 2600 version of "Donkey Kong" published by Coleco, and the Activision title "Keystone Kapers".
Split into simpler sentences: Garry Kitchen (born 1958) is a programmer who is perhaps best known as the author of "Garry Kitchen's GameMaker" for the Commodore 64 platform. Kitchen also authored the Atari 2600 version of "Donkey Kong" for Coleco and the Activision title "Keystone Kapers".