Fallout 2 is a classic, turn-based tactical Western RPG released in 1998. You play as the Chosen One, tasked with finding the Garden of Eden Creation Kit (GECK) to save your drought-stricken tribe in post-nuclear California. The core gameplay loop involves deep character customization, extensive exploration of a wasteland filled with factions, and decision-making via branching dialogue trees that heavily impact the world. Its distinctive feature is the freedom to solve problems through diplomacy, stealth, or combat in a setting known for dark humor and moral ambiguity.
The narrative begins in the primitive tribal village of Arroyo, which is facing an unprecedented drought. As the direct descendant of the legendary Vault Dweller—referred to as the Chosen One—the player is tasked with a monumental quest: retrieving the Garden of Eden Creation Kit (GECK). This mythical device is believed to hold the power to transform the desolate wasteland into a thriving, sustainable community.
Starting with minimal supplies—a jumpsuit, a handheld PIPBoy 2000 device, a water flask, a spear, and some currency—the Chosen One must venture out into the ruins of the old world. The journey involves navigating a complex world populated by numerous distinct tribes, powerful factions, and emerging micro-civilizations, each possessing unique ideologies, vices, and political goals.
The gameplay centers around deep, strategic role-playing combined with tactical, turn-based combat. Character development is highly detailed, allowing players to customize their protagonist extensively through various skills, attributes, and perks that significantly influence interactions and combat effectiveness.
A defining feature of the experience is the emphasis on player choice and consequence. Dialogue trees are extensive and branching, meaning player decisions—ranging from diplomatic negotiations to outright aggression—have lasting effects on the world state and the relationships with various groups encountered throughout the exploration of the wasteland.
The game offers unparalleled freedom in character building and quest resolution. Players are not funneled down a single path; instead, they can approach challenges using stealth, charisma, technical expertise, or brute force. The world reacts dynamically to the player's reputation and alignment.
Exploration is key, rewarding players who delve into the ruins and interact deeply with the diverse inhabitants of this shattered world. The game blends traditional RPG elements with puzzle-solving aspects inherent in navigating complex social and environmental obstacles.
Character progression utilizes a system where skills improve through use, and players gain access to new abilities and traits as they level up. The initial character creation process is crucial, as the chosen attributes and skills heavily dictate which paths—be it diplomacy, combat specialization, or technical mastery—are most viable when dealing with the myriad of factions and moral dilemmas presented across the map.
This title is presented as the main game experience. There are no officially released downloadable content packs or expansions associated with this specific version.

Fallout: Yesterday is a fan-made recreation of the canceled Black Isle's Fallout 3 (Van Buren) on the engine of Fallout 2.

FOnline: Ashes of Phoenix is a Fallout MMORPG based on the FOnline engine. It takes you to Phoenix, Arizona, around 2220. The city miraculously avoided its global destruction during the Great War of 2077, and a well preserved part of its center remained almost completely unnoticed for almost 150 years. Eventually, a rumor speaking of plentiful resources and intact buildings has been spread into the Wasteland. Independent organizations showed up, preparing themselves for an unavoidable conflict with each other, while stronger forces remain hidden, waiting for the situation to evolve and give them the opportunity to achieve their objectives. You are a Wastelander, coming to Phoenix for food and adventure. Fortunately, factions there are happily accepting extra manpower in their ranks. Make your choice, and join the battle for the city. Ashes of Phoenix is a PvP oriented game. It encourages players towards cooperation as well as competition. Recently arrived in Arizona, you’ll have the opportunity to choose a faction composed both of Wasteland characters and other players. In its ranks, you will make your way, explore the Wastes, gather resources, craft gear, barter precious items, gain experience and weapon mastery. Then, you’ll be able to gather with your mates, create new active cells into your faction, explore the city and its undergrounds, face terrifying creatures, control resources, use your sense of diplomacy with other factions and defeat your enemies to become the unique master of Phoenix.

Fallout: Sonora is a total conversion mod for Fallout 2, featuring a wholly new campaign, taking place after the events of the first game, in the area around the titular Sonoran Desert.

Fallout: Nevada is a total conversion mod for Fallout 2, featuring a wholly new campaign, taking place prior to the events of the first game.

Olympus 2207 is a total conversion (modification) of Fallout 2, using its engine and basic mechanics, but getting completely new graphics, additional gameplay features, and a new story in a new world, not related to the Fallout series. It is the first part of the series.

Fallout 1.5: Resurrection is a total conversion mod for Fallout 2, featuring a new several dozen hours long campaign: set in the state of New Mexico, at a point between Fallout 1 and 2.

"Oblivion Lost" is a crossover of the Fallout franchise and the S.T.A.L.K.E.R. franchise built on the Fallout 2 engine.