Oh boy, do I even remember the games?
My game was tromf, a tron knock off game. It worked fairly well but AI at the time struggled to get real time multiplayer working for all 3 of us to play at the same time. Playing single player worked well enough for it to be fun. The CPU player would occasionally freak out and loop into circles until it got himself.
My wife created a flappy bird remake. This worked very well and when prompted to create a multiplayer mode, it worked perfectly. We spent a significant amount of time playing this game.
Ryan created a game that had hopping and fighting... I don't recall very much more from there.
At the time, we were amazed and clearly, with the advances since the original date on this post, these games would be simple for AI to create, it may be time for vibe coding games part 2.