Instead of putting final touches on your Dr. Manhattan costume or re-reading the graphic novel in the final two days before the Watchmen theatrical release, why not play a beat 'em up starring Nite Owl and Rorschach? Watchmen: The End Is Nigh is available starting today for PC and Xbox 360.

The game costs 1600 Microsoft Points ($20). The game's a prequel to the film so no spoilers there. Here are the system requirements for the PC version:

• Operating System: Microsoft® Windows® XP SP1+ (32bit & 64bit), Vista SP1+ (32bit & 64bit)
• Processor: 1.8Ghz 64bit (dual core)
• Memory: 1 GB RAM
• Hard Disk Space: 2GB Available HDD Space
• Video Card: Geforce® 6 Series or greater, ATI Radeon™ x800 series or greater, shader 3.0 and 256MB video memory required
• Sound Card: DirectX® compatible sound card
• Internet Connection: Broadband Internet Connection
• DirectX® Version: DirectX® 9.0c

It should already be downloadable through Xbox Live. According to the game's listing on Steam, it won't be on sale there for a few more hours. PS3 owners will be able to grab it off PSN tomorrow.