- 1981 May 1: Threshold published By Sierra On-Line for Atari 8-bit
- 1983 May 1 : Atarisoft releases Pac-Man for the Intellivision
- 1989 May 1: Mastertronic Atari ST budget UK release: SILKWORM
- 1990 May 1: Atari Games US Trademark date for Hydra
- 2003 May 1 : Atari releases Breakout for cell phones
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