Shadow Warrior

Shadow Warrior is a first-person shooter built on the Build engine, the same tech behind Duke Nukem 3D but pushed further. You play Lo Wang, an ex-bodyguard fighting his former employer's supernatural army across Japan. The game introduced stacked rooms, climbable ladders, and drivable vehicles—some armed. Weapons and items render as 3D voxels instead of flat sprites, and water's transparent. Expect crude humor and over-the-top violence as you slice through demons with katanas or blast them with conventional firearms. It's fast, loud, and doesn't take itself seriously. If you want Build-era shooting with more vertical level design and a sword that gets plenty of use, this delivers.