Halo

Halo defined console shooters and catalyzed Xbox’s rise, yet its 90 million total copies sold place it 40% below Resident Evil's 150 million. However, its per-game average of 3.5 million units trails Master Chief's own legacy: Halo Infinite sold just 3 million in its first month, a 50% drop from Halo 3’s launch tally. Despite being the 10th-highest-selling franchise, its influence on online multiplayer matchmaking and controller aim assist remains unmatched, though it now lags behind Resident Evil in total revenue generation by $4.2 billion.