4 GUNS: Online Zombie Survival is a free-to-play multiplayer first-person shooter game developed by GS Games Studio for Android. The game takes place in a world that has been conquered by specific infected zombies, and your mission is to fight and survive against them. The game provides you with a personal bunker, weapons, and ammunition to help you in your fight against the zombies.

The game's features include a multiplayer PvE FPS first-person shooter where each team consists of 4 players. You will need to use the most effective weapon to kill all the zombies, who have unique multicolored pixelated monsters featuring unusual mechanics and abilities. The game also offers huge crowds of zombies that you will have to survive and kill. The low-poly locations will surprise you, and this pixel combat will be fun. The game provides you with a personal fun bunker for survival in this global mission.

Overall, 4 GUNS: Online Zombie Survival is an exciting game that provides a thrilling multiplayer first-person shooter experience. The unique mechanics and abilities of the zombies, coupled with the low-poly locations, make it a fun and enjoyable game to play. I would highly recommend it to anyone who enjoys shooter games and wants to try something new.