Synapse Software Corporation (marketed as SynSoft in the UK) was an American computer game development and publishing company active from 1981 through 1984. They developed primarily for the Atari 8-bit computers, and later the Commodore 64 and other systems. Synapse is known for a series of highly regarded arcade-style games such as Fort Apocalypse, Blue Max, Pharaoh's Curse, and Shamus, including some unusual games not based on established concepts, like Necromancer and Alley Cat.