There is an abundance of game within Call of Duty: Black Ops proper. A single player campaign, the usual robust multiplayer, and zombies were probably enough for my $60. But Treyarch didn’t stop there. Treyarch added a computer that you can access in the interactive main menu. Full of text, pictures, emails, and user files that flesh out the story. But the big bonus is Dead Ops Arcade. DOA is a top-down twin-stick shooter a la Geometry Wars where you kill zombies while collecting new gun power-ups. Coming from a person that didn’t care for Call of Duty 3, and didn’t purchase Call of Duty: World at War because the beta was enough for me, Treyarch is making it hard for me to experience any buyer’s remorse. Check it out!