Imposter Killer 2021, developed by MiaSanMiaGames.Ltd, is a free Action game available on Android. The game is set on a spaceship where the player's objective is to either kill all the zombies or discover and vote off the imposter among the crewmates.

The game is easy to play, with simple controls that require only one finger to move around the ship, kill crewmates, and sabotage objects. The levels range from easy to expert, providing countless challenges for players. However, players need to be careful as being discovered as the imposter by the crewmates can lead to failure.

Overall, Imposter Killer 2021 is an engaging and fun game for those who enjoy action games. Its simplicity and challenging gameplay make it a great choice for players of all skill levels. And the best part? It's completely free to play.