Borderlands is a 2009 open world action role-playing first-person shooter video game. It is the first game in the Borderlands series, developed by Gearbox Software, and published by 2K Games for PlayStation 3, Xbox 360, Microsoft Windows, Mac OS X and Shield Android TV. The game was released worldwide in October 2009, with the Mac OS X version being released on December 3, 2010 by Feral Interactive. The game's story focuses on a group of four "Vault Hunters", who travel to the distant planet Pandora to hunt down an alien vault, rumored to contain advanced alien technology, finding themselves battling the local fauna and bandit population, but ultimately attempting to stop the head of a private corporation army from reaching the vault first.
The game features the ability to explore the in-game world, and complete both main missions and optional side quests, either in single-player or online cooperative gameplay, with the latter providing additional options for duels and competitive PVP matches in designated areas. Gameplay features include access to various weapons and shields that vary in type and statistics, weapons with special elemental functions, each playable character having distinctive class types and unique abilities for combat, upgradable skills, and the use of two-person vehicles. The game itself is rendered in cartoon-style, cel-shaded graphics, to provide greater detail on weapons and environments, and was inspired by various action role-playing games of the time, such as Ultima and Diablo.