Fallout: New California, a large fan-made Fallout: New Vegas modification first released in 2018, is now available through GOG. Its arrival gives players a simpler official-store route to a substantial, story-focused Fallout experience, particularly for those seeking an alternative to Fallout 76.

Set in 2260, decades before New Vegas, the mod casts players as a resident of Vault 18 whose choices affect their future and that of the New California Republic. It features familiar factions including the NCR, Enclave, Super Mutants and raiders, and is estimated to offer around 10 hours of replayable content; the GOG version requires Fallout: New Vegas Ultimate Edition, while Nexus Mods and ModDB remain alternatives.