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Games like Halo 5: Guardians
If you finished Halo 5: Guardians, the closest matches are Halo Infinite, Metal Gear Solid V: The Phantom Pain, Grand Theft Auto V, Call of Duty 4: Modern Warfare and Halo: Combat Evolved. All 18 share its shooter genre and are ranked by how closely their themes and modes overlap.
Free
88
Halo Infinite
96
Metal Gear Solid V: The Phantom Pain
88
Grand Theft Auto V
88
Call of Duty 4: Modern Warfare
87
Halo: Combat Evolved
84
Call of Duty 2
77
Wolfenstein: The New Order
72
Star Wars Battlefront II
90
Gears of War 2
88
Halo 4
84
Gears of War
70
Call of Duty: Black Ops II
74
Call of Duty: Ghosts
78
Halo 3: ODST
79
Syndicate
77
Gears of War: Judgment
54
Inversion
54