Released on; Commodore C64 and PC DOS in 1984.
Text taken from this page on the Llamasoft web site:
Possibly one of the most memorable Llamasoft games. Giant camel (with anthropomorphic goat-creature sidekick in the ST/Amiga/PC version) blasting through waves of somewhat surreal enemies. Amiga version is the best… 😉
Updated: 16th May 2021: Yak fixed collision detection on the C64 version!
Link below contains a VICE emulator snapshot image file of the fixed version.