It was a very low-quality game for the PC, not sure if it was official or a fan game or what. The title screen played the theme song from SatAM, and one of the levels (I think the first one) was called Robotropolis Zone. (Yes, I'm aware the original SRB had a level by that name, but I don't think it was that.) The music for that level was the music from Flying Battery Zone, I think Act 2. I'm pretty sure I remember it being on a CD (in an orange envelope?) but I'm not sure.