Defender 2000 is a 1996 scrolling shooter video game developed by Llamasoft and published by Atari Corporation for the Atari Jaguar. Part of Atari's 2000 series of arcade game revivals, it is an update of Eugene Jarvis' arcade game Defender (1981). The premise takes place in a future where the Alpha Promixian empire attack mining settlements on distant resource planets. Gameplay is divided into three modes, with the player acting as part of the System Defense Team commanding the Threshold ship to defeat waves of invading aliens while protecting humans.

Jeff Minter is an English video game designer and programmer who often goes by the name Yak. He is the founder of software house Llamasoft and has created dozens of games during his career, which began in 1981 with games for the ZX80. Minter's games are shoot 'em ups which contain titular or in-game references demonstrating his fondness of ruminants. Many of his programs also feature something of a psychedelic element, as in some of the earliest "light synthesizer" programs including Trip-a-Tron.