Borderlands is a series of action role-playing first-person shooter video games in a space western/science fantasy setting, developed by Gearbox Software and published by 2K Games for multiple platforms. The series has received critical acclaim and commercial success for its loot-driven multiplayer co-op gameplay and its sense of humor. As of August 2015, more than 26 million copies of Borderlands games had been shipped, 13 million of which are of Borderlands 2. A film adaptation of the series is in development by Lionsgate.