/vr/ - Retro Games

This is probably a gray area as far as its retroness, but I nominate Tech Romancer for the DC/arcade.

It's a mech fighting game, yeah, but each of the characters is a very distinct homage/parody of a certain mecha genre or tradition, right down to the faster, red-colored version of the "grunt" mecha with a Char horn. The entire game feels like a giant crossover and it's a joy to play.