Jeff 'Yak' Minter (born in Reading, 22 April 1962) is an independent British video game designer and programmer. He is the founder of software house Llamasoft and has created dozens of games during his career. Minter's games are often arcade style shoot 'em ups. They often contain titular or in-game references demonstrating his fondness of ruminants (llamas, sheep, camels, etc.). Many of his programs also feature something of a psychedelic element, as in some of the earliest "light synthesizer" programs including his Trip-a-Tron.