/vr/ - Retro Games

The PS1 had a few side-scrolling mecha action games, all good. The first is Mad Stalker: Full Metal Force, an enhanced port of a PC-Engine game by Fill-In Cafe, a developer better-known for cute JRPGs. This game plays like a side-scrolling beat-'em-up and is aesthetically similar to the Assault Suits games.

https://www.youtube.com/watch?v=Lp-3KyeHy_w

There'a also Gear Fighter Dendoh, a very nice-looking beat-'em-up based on a mecha anime of the same name. This one features a fairly involved story in between levels, as well as new, animal-themed special attacks that are obtained after defeating bosses, and has more of a Saturday morning cartoon vibe.

https://www.youtube.com/watch?v=daj-ohc5h2U

Wolf Fang: Kuuga 2001 is a very nice console port of an arcade game that plays more like a run-n-gun, with a mech that jumps and rolls at great speed while shooting in 360 degrees. The console versions had several additions, including limited mech customization and four different endings.

https://www.youtube.com/watch?v=LR4ZxxdvtCc