Resident Evil: Operation Raccoon City is a third-person shooter developed by Capcom and Slant Six Games. Released in 2012, the game serves as a prequel to Resident Evil 2, set during the same period. The game features a co-op mode, allowing players to team up and take on the undead hordes. This review will focus on the game's co-op experience, particularly with the use of a trainer, and examine its impact on gameplay.