I agree with the previous reviewers that retrieving his memories cannot be the prime driver.
I still think there is a good base there. Hunger Games, Running Man will be mentioned but the concept that the elite use a game to blind the population to the reality of their situation is not new. After all Rome invented the Arena for that purpose. The expression “Panem and Circenses”?that in Latin literally means “bread and circuses” was used to describe the cynical formula used by Roman emperors for keeping the masses content with ample food and entertainment.

Personnally I would flip the script. He has his memories, he knows that he is innocent. In fact he volunteered for the show in order to prove that the game was rigged.

In that dystopian world, Big Brother AI records everything, but access to unaltered version of video surveillance is restricted by security level. Participants to the show are supposed to be chosen randomly. The game is run by that an AI, so it is allegedly incorruptible. However high level executives have found a way so enemies and social undesirable are more likely to be selected. In the game, each victory unlocks points and with the points participants can purchase physical reward (food, weapons, medical supplies, …) or increase their security level. In order to release the video that show the high level executives rigging the game, the?hero needs to survive and kill a lot of people.

In a dystopian world where victories in macabre TV reality show grant you Freedom, a principle man must kill his opponents to reveal how a mysterious cabal is staging a silent coup.