What are the Metal Gear spin-offs?
Metal Gear: Ghost Babel, released for Game Boy Color in 2000, is the spin-off with the strongest critical afterlife: a top down game in the MSX style, set in an alternate timeline where Snake returns to a rebuilt Outer Heaven fortress. Western copies dropped the Metal Gear Solid branding used in Japan, a naming split that still confuses listings, and its small cartridge print run in the West makes it one of the scarcer handheld entries.
Metal Gear Acid (2004) and Acid 2 (2005) rebuilt stealth as a card driven, turn based tactics game for the PSP launch window, with a cel shaded sequel and a 3D viewing gimmick using a packed in viewer. They are alternate universe stories, deliberately outside the main timeline, and they show how far Konami would stretch the brand in the PSP era.
Portable Ops (2006), also PSP, is the spin-off closest to canon: Big Boss, captured in 1970, builds the unit that becomes FOXHOUND's seed and meets a young Roy Campbell and Gray Fox's earlier self. Its squad recruitment system, soldiers carried to access points in a famous era specific mechanic, leads directly to Peace Walker's base building. A standalone expansion, Portable Ops Plus, focused on its online and challenge modes.
Metal Gear Rising: Revengeance, released in 2013, handed Raiden to PlatinumGames after an internal version stalled, and the result is the brand's pure action branch: a cyborg swordsman cutting through anything, a meme immortal soundtrack, and a story set after Metal Gear Solid 4. It sold the series to an audience that never touched stealth, and its PC port kept it alive long past its console generation.
Together the spin-offs map Konami's platform bets across two decades: Game Boy Color, PSP twice over, and the Platinum partnership. For collectors they are also the value layer of the series, mostly affordable, format varied and regionally distinct, with Japanese and Western covers diverging often enough that each title needs its own check.
