80		NAM (Windows, 2014)
80		NAM (DOS, 1998)
78		7554 (Windows, 2011)
75		Shellshock 2: Blood Trails (Windows, 2009)
73		The Hell in Vietnam (Windows, 2007)
71		Vietcong (Windows, 2003)
71		Vietcong 2 (Windows, 2005)
70		Vietnam: Ho Chi Minh Trail (Windows, 2003)
70		Vietnam: Black Ops (Windows, 2000)
70		Men of Valor (Windows, 2004)
66		The Stalin Subway (Windows, 2005)
63		A.V.A.: Alliance of Valiant Arms (Windows, 2011)
62		Battlefield: Vietnam (Windows, 2004)
61		Battlefield: Vietnam - Redux (Windows, 2005)
60		Sairento VR (Windows, 2016)
60		Bardo (Windows, 2018)
52		Medal of Honor: Warfighter (Windows, 2012)
52		Shadow Warrior (Windows, 2013)
51		Shadow Warrior (Windows, 2013)
51		Medal of Honor: Pacific Assault (Windows, 2004)
51		Call of Duty: Advanced Warfare (Windows, 2014)
50		Velvet Assassin (Windows, 2009)
50		Line of Sight: Vietnam (Windows, 2003)
50		Contract J.A.C.K. (Windows, 2003)
50		Shadow Warrior (DOS, 1997)
47		Battlefield: Bad Company 2 (Windows, 2010)
46		Call of Duty: Black Ops (Windows, 2010)
46		Call of Duty: World at War (Windows, 2008)
44		Battlefield 2 (Windows, 2005)
43		No One Lives Forever 2: A Spy in H.A.R.M.'s Way (Windows, 2002)
43		The Operative: No One Lives Forever (Windows, 2000)
42		Platoon (DOS, 1987)
42		Unreal Tournament III (Windows, 2007)
42		Soldier Boyz (Windows, 1997)
41		Mirror's Edge (Windows, 2009)
40		Shattered Horizon (Windows, 2009)
40		Scorpion: Disfigured (Windows, 2009)
40		Marine Heavy Gunner: Vietnam (Windows, 2004)
40		Dreamkiller (Windows, 2009)
40		Darkest of Days (Windows, 2009)
40		Tom Clancy's Rainbow Six: Vegas (Windows, 2006)
40		Tom Clancy's Ghost Recon: Advanced Warfighter 2 (Windows, 2008)
40		America's Army 3 (Windows, 2009)
40		Bulletstorm (Windows, 2011)
40		BioShock Infinite (Windows, 2013)
40		Brothers in Arms: Hell's Highway (Windows, 2008)
40		Singularity (Windows, 2010)
40		Metro 2033 (Windows, 2010)

Notes: Games similar to Tunnel Rats, Games like Tunnel Rats, Replay Studios GmbH, Boll AG, Windows, Action, Asia, Cold War, Shooter, 1st-person, Vietnam War, PhysX, PC, Game Similarities.