The game was received relatively positively and was ranked as one of the best-selling PC games of 1990s. Fallout's atmosphere and artwork are reminiscent of the United States during the Cold War era and the fear that the country was headed for nuclear war in the real world.

However, a disagreement with the creator of GURPS, Steve Jackson, over the game's violent content required Black Isle Studios to develop the new SPECIAL system. Fallout was originally intended to run under the GURPS role-playing game system. Afterwards, the Vault Dweller must thwart the plans of a group of mutants, led by a grotesque entity named the Master. The protagonist, referred to as the Vault Dweller, is tasked with recovering a water chip in the Wasteland to replace the broken one in their underground shelter home, Vault 13.

Released in October 1997, Fallout: A Post Nuclear Roleplaying Game takes place in a post-apocalyptic Southern Taft and Northern California, beginning in the year 2161.

1.2.1 Fallout Tactics: Brotherhood of Steel.

Fallout 2 joining the enclave