The menu screen in Call of Duty: Black Ops is not like other menu screens. That’s because it lets you play a classic adventure game.
Players like YouTube user BoredMunkey have already discovered a fantastic Easter egg in the shooter game, which Activision released Tuesday. Following the steps in the video above, players can break away from the game’s main menu and access an old computer that’s running DOS. Type in “Zork” and you’ll get to play the classic Infocom text adventure in its entirety.