Summary: This is one of the best arcade-style games I have ever played on a console. The multi-player function is the real appeal here, and the players must not only develop their personal skills, but their ability to work together in order to truly succeed at this game.
Summary: A very rewarding co-op game experience. Easy for anyone to pickup and play, but very difficult to master. It's not as frustratingly unforgiving as other games like Geometry Wars. Lots of medals to earn and stages to explore, and many great little touches (like skipping golded levels, earning more...
Summary: Schizoid is truly one of the best co-op games I have ever played. The single player plays just like co-op except there is an AI controlling the second player. The AI is pretty good, but you have to "follow" it in order to really do well.
Summary: Schizoid is one of my favorite Xbox Live Arcade games. I do not recommend it as a 1-player game, but it is an excellent 2-player game. The concept is very simple and addictive. The game is played via the top-down or bird's eye view perspective.
Summary: A fun and creative twist on the "dual-joystick-shooter". Tons of fun with lots of intense action when playing with a friend. Also, the Uberschizoid is mind-breaking and awesome. Totally worth the 800msp.