Okay, kind of a vague memory, but maybe someone can make something of it. These would've both been sometime in the mid-90s:

The first game was a shooter with a top-down view. The weapons were kind of weird (one was a rubber band shooter, I think) and it had a cartoony look. One of the enemies was a caveman who said "Unga Bunga!" I want to say it was an Interplay or MacPlay title, since I remember a demo of it being on a Mario's Game Gallery disc (probably because it was one of the few demos that would even run on my then-already-ancient Mac LC520). However, I don't see any matches on Allgame under either developer.

The other was a CD-ROM game where you had to go through a factory of some sort and collect pieces to make a race car/buggy kind of thing (although I think you could make other vehicles too). You'd find pieces like a transmission, chassis, wheels, even paint and decorations, and you had to race it against a stereotypical mad scientist who sounded kind of like Dr. Doofenshmirtz.