Fallout: New Vegas: Old World Blues

In Old World Blues, the Courier is abducted and experimented upon by the Think Tank, a group of pre-War scientists that have replaced their aging bodies with machines. Learning that the Think Tank has removed and subsequently lost the Courier's brain, the Courier aids the Think Tank scientists in fighting Dr. Mobius, the rogue scientist currently in possession of their missing brain. Exploring the Big MT facility, the Courier rediscovers lost technology and fights off lobotomites, robo-scorpions, and more.