I had their follow up game Capture the Flag on my Atari 800. Same engine, but slightly upgraded graphics. Fun game!
https://moegamer.net/2019/03/05/atari-a-to-z-capture-the-fla...
https://moegamer.net/2019/03/05/atari-a-to-z-capture-the-fla...
Like him otherwise, but nope he didn't invent it...