AMOK (U) ISO

Amok is a Western 'Mech game that has you romping through secret-filled levels, above and below water, blasting away hordes of infantry, turrets, ants, flying wasp men, sewer rats, turbo sharks, UFOs, and weird floaty mech things. You can side-strafe, but you cannot turn your torso and this is immaterial given your mech is incredibly agile. There is also no location damage, you have a unified HP pool. Your weapon loadout is fixed to machine gun (infinite), missiles, super missiles, and bombs.
This game presents revolutionary graphics, a muddy "late-2000s" art style, an edgy soundtrack, and simple yet slightly compelling gameplay.

The crux of the affair is the game's reliance on voxel graphics to build the game world. With this, the game has arguably built some of the most detailed and large game worlds possible on a 5th generation console. And the frame-rate (on a real Saturn) is remarkably stable. The game feels good to play, if its your thing.
There are power-ups scattered about the levels, like temporary shields, turbo guns, big bullets, and "over-shields".

The real problem with this game is that it is structured like an arcade game, but in actuality it is one of the longer games of that type on the Saturn (around 3-4 hours). So there is no save function, if you die or quit, you must start over (.. or use a save state, if in an emulator). This is troublesome because the levels are sprawling and there's at least 2 secret levels, probably more. The game is also reasonably challenging. Straight-through you are looking at 8 levels, but don't be fooled by the first few: They are large, sprawling levels with many secret paths hidden in them. A useful code to remember is ZZZCYX, this in the options menu on startup will grant you the level select. The level select cannot select secret levels, however.

That is one case where playing on an emulator provides a distinct advantage over real hardware. Alas, I did not play this on an emulator, I don't know what is missing from SSF or Yabause. I've had the best luck using Bizhawk with a few games.

I suggest you give Amok a try as it just might grip you with its edgy-ness, and by the way: The Saturn version seems to be superior to the PC version, as the PC version seems to have some strange barline filter applied to the screen that is not present on the Saturn. The resolution of the voxels also seems higher on the Saturn but I could be wrong.