Call of Duty: Black Ops
In Call of Duty: Black Ops, the T-55 is used extensively by the North Vietnamese Army, it appears in two levels: "SOG", and "The Defector". In "SOG," the player must use M72 LAWs and TOW missiles to destroy attacking T-55s. In the next campaign level, "The Defector", a T-55 appears in the streets of Hue, near the end of the level, destroying the M113 Bottom Feeder. The player must use helicopter gunship support to destroy the tank and proceed. A few more appear shortly before the PBR arrives extracting the player.
It is seen in Dead Ops Arcade when the player picks up the "Tank" Power-up and transforms into a tank that resembles the T-55.