Half-Life: C.A.G.E.D.

Locked in a cell at the Correctional and Automatic Guardhouse Electronic Detention facility, the player must improvise a way out. A burst pipe and a buildup of pressure blow open an escape route into the sewers. From there it is a fight through the facility — evading or killing guards — until a final confrontation at the prison's docks opens access to a speedboat and, with enough speed, freedom.