65		Time Crisis 3 (PlayStation 2, 2003)
65		Time Crisis II (PlayStation 2, 2001)
64		Time Crisis: Project Titan (PlayStation, 2001)
63		Time Crisis: Crisis Zone (PlayStation 2, 2004)
63		Silent Scope (PlayStation 2, 2000)
62		Time Crisis (PlayStation, 1997)
60		Time Crisis 4 (PlayStation 3, 2007)
54		Death Crimson OX (PlayStation 2, 2003)
51		Dead Space: Extraction (PlayStation 3, 2011)
50		Resident Evil: The Darkside Chronicles (PlayStation 3, 2012)
50		The House of the Dead: Overkill - Extended Cut (PlayStation 3, 2011)
50		The House of the Dead III (PlayStation 3, 2012)
50		Area 51 (PlayStation, 1996)
50		Crypt Killer (PlayStation, 1997)
40		Project: Horned Owl (PlayStation, 1996)
40		Chaos Control (PlayStation, 1996)

Notes: Games similar to Ninja Assault, Games like Ninja Assault, Now Production Co., Ltd., Namco Europe Limited, PlayStation 2, Action, Japan, Ancient, Classical, Medieval, Rail Shooter, 1st-person, Light Gun Shooter, Sony PlayStation, PSX, PS1, PS2, PS3, PS4, Game Similarities.