Released on; Atari 2600 in 1995.
Not issued commercially, just created and saved for posterity. }:-)
Text taken from this thread on YakYak.org:
2600 hacks are fun :). You’ve doubtless seen “Beast Invaders” – did that one morning as a break from working on D2K (Defender 2000 on Atari Jaguar).
Atari 2600 Download