What game in the Gears of War series sold the most copies?
Gears of War I
Gears of War 2
Gears of War: Black Ops
Gears of War 4
Gears of War 3
Gears of War 2
Gears of War: Red Alert 2
Gears of War: Black Ops
Gears of War: Pacific Rim
Gears of War 4
Gears of War: Red Alert
Gears of War: Heavy Rain
Gears of War 3
Gears of War 2
Gears of War: The Last Stand
Gears of War: Red Alert 2
Gears of War 5
Gears of War: Black Ops
Gears of War: Pacific Rim
Gears of War 4
Gears of War: Red Alert
Gears of War: Heavy Rain
Gears of War 3
Gears of War 2
Gears of War: The Last Stand
Gears of War: Red Alert 2
Gears of War 5
Gears of War: Black Ops
Gears of War 4
Gears of War: Pacific Rim
Gears of War 3
Gears of War: Red Alert
Gears of War: Heavy Rain
Gears of War 2
Gears of War: Red Alert 2
Gears of War: The Last Stand
Gears 4: Modern Warfare
Gears of War 4
Gears of War: Black Ops
Gears of War 5
Gears of War 3
Gears of War: Pacific Rim
Gears of War 2
Gears of War: Red Alert
Gears of War: Heavy Rain
Gears of War: Red Alert 2
Gears of War 4
Gears of War: The Last Stand
Gears of War 5
Gears of War 3
Gears of War: Black Ops
Gears of War Black Ops
Gears of War: Pacific Rim
Gears of War 2
Gears of War: Red Alert
Gears of War: Heavy Rain
Gears: Modern Warfare
Gears of War
Gears of War 4
Gears of War: Red Alert 2
Gears of War 5
Gears of War: The Last Stand
Gears 5
Gears of War 3
Gears of War Black Ops
Gears of War: Black Ops
Gears of War 2
Gears of War: Pacific Rim
Gears: Modern Warfare
Gears of War: Red Alert
Gears of War: Heavy Rain
Gears 5
Gears of War
Gears of War 4
Gears of War 5
Gears 4
Gears of War 3
Gears of War: The Last Stand
Gears of War: Red Alert 2
Gears of War Red Alert 2
Gears of War Rogue Squad Leader
Gears of War 2
Gears of War: Black Ops
Gears of War: ODST
Gears: Modern Warfare
Gears 4: Modern Warfare
Gears: Modern Warfare 2
Gears 2
Gears 5
Gears: Combat Evolved
Gears of War: Red Alert
Gears 4
Gears of War: Heavy Rain
Gears of War 4
Gears of War Rogue Squadrons
Gears of War 5
Gears 3
Gears of War
Gears of War 3
Grand Theft Auto V
Gears of War: The Last Stand
Gears: Modern Warfare
Gears of War 2
Gears 4: Modern Warfare
Gears 2
Gears of War: Black Ops
Gears 5
Gears of War: Red Alert 2
Gears: Modern Warfare 2
Gears 4
Gears of War: Battlefield 1
Gears 3
Gears of War: Red Alert
Gears of War 4
Gears of War 5
Grand Theft Auto V
Gears of War Red Alert
Gears 2
Gears of War
Gears 5
Gears of War 3
Gears: Heavy Gears
Gears: Modern Warfare
Gears of War Rogue
Gears 4
Gears of War 2
Gears of War: Black Ops
Gears: Combat Evolved
Gears of War: The Last Stand
Gears: Modern Warfare 2
Gears of War: Red Alert 2
Gears 3
Gears of War: Battlefield 1942
Gears 2
Gears 5
Gears of War: Red Alert
Grand Theft Auto V
Gears of War 4
Gears 6
Gears: Heavy Gears
Gears of War 5
Gears: Modern Warfare
Gears 4
Gears of War
Gears 4: Modern Warfare
Gears of War 3
Gears of War: Pacific Rim
Gears of War 2
Gears 3
Gears of War: Black Ops
Gears of War: Heavy Rain
Gears 2
Gears 5
Gears of War: Red Alert 2
Gears: Heavy Rain
Gears 6
Gears 4
Gears: Heavy Gears
Gears of War: Red Alert
Grand Theft Auto V
Gears of War 4
Gears: Modern Warfare
Gears 4: Modern Warfare
Gears of War 5
Gears 3
Gears of War
Gears of War 3
Gears of War: ODST
Gears of War 2
Gears 2
Gears of War: Black Ops
Gears 5
Gears of War: The Last Stand
Gears: Black Ops
Gears 6
Gears: Black Ops II
Gears: Heavy Rain
Gears 4
Gears of War: Red Alert 2
Gears of War II
Gears 3
Gears of War: Red Alert
Grand Theft Auto V
Gears of War 4
Gears of War 5
Gears 2
Gears of War
Gears 5
Gears of War 3
Gears 6
Gears: Metal Gear Solid 4
Gears 4
Gears: Red Dead Redemption 2
Gears of War 2
Gears of War: Black Ops
Gears: Heavy Rain
Gears of War: The Last Stand
Gears: Black Ops III
Gears: Heavy Gears
Gears: Modern Warfare 2
Gears 3