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Old World Blues: Big MT

A science-fiction comedy in a pre-War research crater. The Think Tank, a talking stealth suit, your own house with a talking toaster, and the best base in the game.

Entry point
Mojave Drive-in
Recommended level
15+

Go to the Mojave Drive-in west of Primm after dark and interact with the satellite dish that has crashed into the screen. You are teleported to the Big MT research crater.

Old World Blues drops the Courier into Big MT, a crater of abandoned research facilities ruled by the Think Tank, five brains in jars who have removed your brain, heart and spine. The crater is full of lobotomites, robo-scorpions, cazadores and nightstalkers, and nearly every building hides a unique weapon or an upgrade for the Sink, the player home you unlock at the start.

The Sink is the reason many players do this DLC early: it has an auto-doc, a workbench, a jukebox and a garden, and its personalities (the Toaster, Blind Diode Jefferson, Muggy) are the funniest writing in the game. Completing the DLC raises the level cap by 5 and lets you return to Big MT freely, so you can finish exploring later.

Enemies scale and hit hard, so Energy Weapons or a strong Guns build, plus Science for terminals and the Y-17 trauma harnesses, make the trip much smoother.

All locations on the Big MT map