I can't believe I didn't put Wolf 3D, Scorched Earth and Jazz Jackrabbit in my list. Probably if someone posts his games I'll see others I missed
I'm sure I'll do the same if other people post. I had this one game on the XT where there were two 2 single-prop planes that dog fight in a 2D field. I don't remember what it was called, but I think it was something along the lines of Red Barron or something like that.
I crashed into the ground more than I shot people