Chromatic is an entertaining two-dimensional shooter that pits you against endless waves of enemy attacks. The developer is nearing the completion of a tournament style multi-player mode (demoed in the above video) for Chromatic and is looking for beta testers to help iron out the kinks.
The tournament mode will be able to play world-wide games where everyone is on equal footing with the same weapons and powerups to see who can rack up the highest score. New tournament games are generated every two and half minutes.
If you are interested in becoming a beta tester for Chromatic, just shoot them an email at firstname.lastname@example.org with your Live ID. They are currently looking for testers who can test out the new game mode at coordinated times. You can find Chromatic (free) here at the Windows Phone Marketplace.
If you have any questions or comments for the developer, there's a discussion going on here in the WPCentral Forums. Speaking of, make sure you if you're a developer you post your beta-requests there and for readers, be sure to check our Beta Forums regularly for great opportunities: Developer Beta Testing.