While Sega was busy teasing a new 2D sonic this week, they sneakily released Sonic and Knuckles, from the Sega Megadrive days, onto Xbox Live Arcade. Still in a 2D perspective, the game follows Sonic and his former enemy Knuckles as they join forces to try and bring down Dr. Robotnik and save Angel Island. Similar to Sonic & Tails, you'll be able swap between Sonic and Knuckles, who both play slightly differently. Sonic & Knuckles is out now for 400 Microsoft Points.

　　Only one release from the Nintendo DSi Shop this week: 2-in-1 Solitaire for the DSi. Including two versions of the world famous card game, Klondike and Spider Solitaire, 2-in-1 Solitaire has a variety of difficulty levels, and is available for 200 Nintento Points.

　　Spaceball: Revoultion comes from the Wii Shop Channel this week and is a ball bouncing puzzle game where the object is to turn a series of squares into a set pattern. Bouncing a ball into the squares turns them either on or off. With four different difficulty levels, Spaceball: Revolution also allows you to compare your scores on a worldwide leaderboard, and is available for 800 Nintendo Points.

　　Two games were released this week for the Virtual Console, Solomon's Key and RYGAR. Solomon's Key is a side-scrolling puzzle action game first released in 1986, and is now available for 500 Nintendo Points. RYGAR, also a 1986 original release, is a side-scrolling action adventure game, praised for its graphics, and is available for 600 Nintendo Points.

　　The PlayStation Network had a pretty slim week this week, with the only game to hit its virtual storefront being a port of Interpol: The Trail of Dr. Chaos. The game was critically panned earlier in the year when it came to XBLA. Aside from that, there's just a couple of new Dynamic Themes for your PS3, a few new demos, and the usual assortment of Rock Band tracks. Check out the list below for all the details of what new content came out on both the PSN Store and XBLA store this week.

　　Wipeout Dynamic Theme - FREESackboy on the Run Dynamic Theme - FREEMotorStorm Dynamic Theme - FREEFIFA Soccer 10 demo - FREELittle Big Planet demo - FREEKatamari Forever demo - FREEPAIN: George Takei character pack - A$2.45High Velocity Bowling Back to School Ball Pack - A$1.75High Velocity Bowling Graphic Pattern Ball Pack - A$1.75High Velocity Bowling Heather Haughter Pack - A$1.75Rock Band: Get Ready 2 Rokk, Less Talk More Rokk, and Science Genius Girl - Freezepop, ABC - The Jackson 5, Gasoline - Audioslave, Kryptonite - 3 Doors Down, and Miss Murder - AFI. All tracks are A$2.45/160 Microsoft Points each.Rock Band: Freezepop Pack 01 (Includes the three Freepop tracks listed above) A$9.25/240 Microsoft PointsRock Band: The PAX 2009 Collection (containing the list of tracks below): A$3.75/240 Microsoft Points, or A$1.30 per song. Opening Band - Paul and Storm Origin of Species by MC Frontalot Re: Your Brains by Jonathan Coulton

　　Knuckles tears it up in Sonic & Knuckles.