65		Robotron X (PlayStation, 1996)
60		Alien Shooter (PlayStation 3, 2016)
60		Alien Shooter (PlayStation 4, 2016)
57		Crusader: No Remorse (PlayStation, 1996)
54		Xevious 3D/G+ (PlayStation, 1997)
50		Deployment (PlayStation 4, 2018)
50		Xevious 3D/G+ (PlayStation 3, 2013)
50		D/Generation (PlayStation 4, 2016)
44		Bedlam (PlayStation, 1997)

Notes: Games similar to Project Overkill, Games like Project Overkill, Konami of America, Inc., Konami of America, Inc., PlayStation, Action, Cyberpunk, Dark Sci-Fi, Sci-Fi, Futuristic, Puzzle elements, Shooter, Isometric, Sony PlayStation, PSX, PS1, PS2, PS3, PS4, Game Similarities.