King Of The Monsters
This is a one-on-one beat-em-up where you can play a big monster. You are fighting another monster in a city, which you can destroy and collect power-ups. Awesome.
Mortal Kombat II
A fast-paced, head-to-head fighting game with twelve characters to choose from -- each one with his or her own special moves. Lots of blood and gore with special endings e.g. Fatality, Friendship, and Babality that depend upon the combination of moves performed by the winner at the end of the match.
Marvel Vs. Capcom 2
A three-on-three fighting game featuring characters from the Marvel and Capcom universe. Seriously fun.