Jeff The Killer: Betrayal is a free Android action game developed by Poison Games. In this game, you play as Jeff, who is back in his hometown after a long time, only to find out that his old enemy, Slenderman, is back and stronger than ever. Slenderman has taken and killed all of Jeff's victims and is now after Jeff himself, with the help of his sidekicks.

To survive, Jeff must find Slenderman's hideout and complete various tasks before he can fight him. The game features a chilling atmosphere with eerie sound effects and graphics that keep you on the edge of your seat. With each completed task, the tension builds up, making the game more challenging and exciting.

Overall, Jeff The Killer: Betrayal is a well-designed action game that is sure to give you a thrilling experience. Download it for free on your Android device and get ready to fight for survival.