Captain America and the Avengers is a faithful port of the arcade game by Data East. It stars Captain America, Iron Man, Hawkeye, and Vision. Its somewhat unique combat puts a strong emphasis on projectiles.
CAPTAIN AMERICA - Picked for the experimental 'Super Soldier' project during World War 2. Trained to become a one-man army. A combat expert, his special skill is his shield-throwing ability.
IRON MAN - President of Stark Industries, he is an inventor of new weapons. His power comes from his steel suit of armor. With his armor he can travel under water or into space.
VISION - An artificial being with great knowledge of biology and engineering. His power comes from light gathered by the gem in his forehead. He uses this light energy to fire his solar beam.
HAWKEYE - Hawkeye received his training under Captain America. He is also a naturally skilled marksman with any thrown or aimed weapon. He has superhuman power of sight and is skilled in the bow and arrow.
This game has the most digitized voice samples of any Genesis brawler.
The large robot fought at the end of the first shooter section is a Sentinel, which is originally from X-Men.
Captain America is average. I actually enjoyed the Genesis one the best because its humble presentation and simple yet difficult gameplay felt right at home. Still, its awkward combat and tiny sprites are too off-putting to really get into. It has a good challenge and decent variety, though.