>>530506521. The idea of "game killers" is nonsense parroted by game journalists and "analysts". It doesn't hold up to reality. Popular games rarely if every "get killed" (lost popularity) just because another similar game comes along.
2. When a game "gets killed" it is usually because the game was already losing popularity for various reasons. This then leaves an opportunity for another game to come along and sell to unsatisfied customers. This "kills" the other game but only because the other game was already "dead". A good example would be Final Fantasy XIV and World of Warcraft. World of Warcraft wasn't "killed" by Final Fantasy XIV, it just killed itself so a lot of unsatisfied WoW players left for FFXIV.
3. This "game killer" concept makes even less sense for single player games. Popular games in the same genre do not compete with each other; they ENHANCE each other's popularity. Multiplayer games might have to compete for their playerbase, but single player games don't. When a player has a lot of fun with a game, when he finishes that game, he's going to look for other similar games.