Fallout: New California

Fallout: New California is a fangame and unofficial prequel to Fallout: New Vegas. The story takes place in 2260, 21 years before Fallout: New Vegas. The game is divided into two parts.

The first part takes place in Vault 18, located near the San Bernardino Mountains in the Cajon Pass. Vault 18 is described as a secluded community. In the past, its residents included explorers who traveled the outside world as the "Wasteland Scouts", becoming legends for their adventures. However, after making too many enemies, the vault has cut itself off from the outside world. The aging vault population is in decline, and many of its youth come from the wasteland. The player is from one such missing tribe.

The second part focuses on the player survival in the outside world, with a growing territorial conflict between two major factions. The New California Republic (NCR), trapped in domestic turmoil amid its imperialistic vision to unify all of California, led in the region by the hawkish General William Silverman. The second is the Raider Alliance, a loose confederation of tribes, rebels, criminals, and others displaced by and radicalized against the NCR, led by the psychotic warlord Juan Maxson-Elsdragon. Two other main subfactions are the Bishops, a criminal mob family with control of NCR politics represented by Senator Paul Duville, and the Nanjima Shi, a clan of samurai-styled Japanese warriors within the Raider Alliance led by the warlord Kieva Nanjima.

Despite some bugs, this mod is appreciate for his story and content, and won the Players Choice and Editors Choice for Mod DB's 2018 Mod of the Year.