@gabriel The only cereal box PC game I remember playing was some baseball game, but it was just a demo in that it was just a homerun contest. This listing seems to be the only info I can find on it.

https://poshmark.com/listing/Vintage-2003-Post-Cereal-PC-Baseball-Game-MLB-Set-CDs-16-61c7c1087ec30c9e122b719e