Fallout is a series of post video games created by IE. Although the series is set during the 22nd and 23rd centuries, its retrofuturistic story and artwork are influenced by the postwar, and its combination of hope for the promises of technology and lurking fear of nuclear annihilation.

An inspiration for Fallout is a game titled Wastland, published by EA games on the Commodore 64, Apple II & later on the PC. Although the game worlds are different, the background story, inhabitants, locations and characters draw many parallels from this landmark game. It is said that the Fallout series is the spiritual successor to Wasteland.

The first two titles in the series were developed by Black Isle Studio. Micro Forte and 14 Degrees East's Fallou of 2001 was tactical foye-payng In 2004, Interplay closed Black Isle Studios,and continued to produce an action game with RPG elements for PC without Black Isle Studios. A third entry in the main series, was released in 2008 by Bethesda Softworks. Fallout was developed by Obsidian Enterteinmant with many former Black Isle employees who created Fallout and Fallout 2. Bethesda made it clear that New Vegas was not a direct sequel to Fallout 3, but an addition to the franchise.

Bethesda Softworks now owns the rights to produce all Fallout games,and has conditionally licensed the rights to make a massively game version of Fallout to Interplay. Interplay's rights to developing and publishing Fallot online have been the subject of a legal dispute between Bethesda Softworks, the current owner of the Fallout franchise, and Interplay. This legal debate was recently won in favor of Bethesda Softworks, and it is in active development with a projected release date of 2012.