Path of Exile is a free-to-play online action role-playing game developed and published by Grinding Gear Games. Released in 2013, the game has a cult following with developers committed to releasing Challenge Leagues every three months. Players control a single character from an overhead perspective to explore large outdoor areas and underground dungeons while battling monsters and fulfilling quests from NPCs. The game borrows heavily from the Diablo series by Blizzard Entertainment.