Games like Humvee Assault: War 3D FPS

If you finished Humvee Assault: War 3D FPS, the closest matches are Pixel Ripped 1978, Cotton Fantasy, Rigid Force Redux, Stay Cool, Kobayashi-san!: A River City Ransom Story and Haunted Zombie Slaughter 2. All 6 share its adventure genre and are ranked by how closely their themes and modes overlap.