Attention! Calling all hardcore-action fans. Repeat, calling all hardcore-action fans. Gamers, if you own an Android or iOS device, then it is time to rage war with guns with players around the world. Yes, it is time to unleash hell with Gun Bros Multiplayer. Created by Glu Mobile, this developer needs no introduction and has created a strong foothold in the smartphone gaming segment with masterpieces like Frontline Commando, Blood & Glory, Contract Killer: Zombies and a ton of other slick offerings.