Just for President's Day, Activision is unlocking Call of Duty: Black Ops' two secret modes: Dead Ops Arcade, the top-down dual-stick shooter hidden in a DOS emulator, and the Presidential zombie fight known as "Five" that's unlocked upon completion of the single-player campaign. They'll remain unlocked throughout the weekend -- free of charge -- so get 'em before they return to Easter Egg status.

This seems a bit too late for Activision to be doing this as most people will already have the maps, nonetheless, they are trying to help those who cannot complete the campaign I suppose.

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