The Pinnacle of Entertainment Software.
Founded in 1984 and based in Miami, Capstone is a developer and publisher most infamous for their rather crappy first-person games in the Wolfenstein 3D engine, and later the Build Engine.
Capstone's parent IntraCorp went bankrupt in 1996 and shut down all of its operations, including them. This would also end up taking a sequel to Corridor 7: Alien Invasion with them. a successor company, called VRTech was founded, which provided first-person buildouts of new construction condominiums using the Build engine. However, they too would eventually close.