Gridrunner is a fixed shooter video game written by Jeff Minter and published by Llamasoft for the VIC-20 in 1982. It was ported to the Atari 8-bit family, ZX Spectrum, Commodore 64, Commodore PET and Dragon 32. Many remakes and sequels have followed, including versions for the Atari ST, Amiga, Pocket PC, Microsoft Windows, and iOS.