Record Rampage is a game that can be accessed by standing on the Game Portal in the diner. The game involves firing at records flying across the room (presumably thrown by another Deuce behind the screen). Fireballs are fired towards the records from a yellow pitchfork at the bottom of the screen. The farther away (and therefore smaller) a record is, the more points the player scores by successfully hitting it. If a fireball hits two records at once, the player scores extra points.
The Double Deuce Diner has a shop called Deuce-Mart where you can buy Deuce related merchandise, such as a lava waterfall or a green record.