What is gunbros?

Gun Bros is a mobile game developed by Glu Games that was released in October 2011. It is a top-down shooter game set in a futuristic world where players can choose from a variety of weapons and gear to battle against waves of enemies in different levels. The game has a co-operative multiplayer mode, allowing players to team up with friends and fight together. The game also features in-app purchases for players to buy equipment and upgrades to progress through the game faster. Gun Bros has been praised for its fast-paced gameplay and graphics, but has also faced criticism for its heavy reliance on in-app purchases for progression.