Mountain is a simulation video game developed by David OReilly and published by Double Fine Productions. It was released for Microsoft Windows, OS X, Linux, and iOS in July 2014. The game is an idle game in which the only influence the player can have on the game is at the start of the game where the player is tasked to draw objects. The game is designed to be played in the background while the player uses other applications.

Double Fine Productions, Inc. is an American first-party video game developer of Xbox Game Studios based in San Francisco, California. Founded in July 2000 by Tim Schafer shortly after his departure from LucasArts, Double Fine's first two games – Psychonauts and Brütal Legend – underperformed publishers' expectations despite critical praise. The future of the company was assured when Schafer turned to several in-house prototypes built during a two-week period known as "Amnesia Fortnight" to expand as smaller titles, all of which were licensed through publishers and met with commercial success. Schafer has since repeated these Amnesia Fortnights, using fan-voting mechanics, to help select and build smaller titles. Double Fine is also credited with driving interest in crowdfunding in video games, having been able to raise more than US$3 million for the development of Broken Age, at the time one of the largest projects funded by Kickstarter, and more than US$3 million for the development of Psychonauts 2.