Left Behind

"Left Behind" is a free-to-play first-person shooter game that follows a post-apocalyptic world overrun by zombies. The game's developer has made it paid temporarily to raise funds for their grandmother's urgent breast cancer operation. Players must navigate through levels, scavenge for weapons and supplies, and fight off hordes of zombies to survive. The developer has pledged to make the game free again once enough funds are raised for the operation.