Carbonated Games is a small division of Microsoft Casual Gaming that offers free online, web based multiplayer Flash Games.

Currently they are asking gamers to beta test a new single player web based puzzle game called Hopnotic. Hopnotic is an original web-based puzzle game that is all about hopping pieces and solving puzzles. Just pick a piece, and hop over neighboring pieces to clear them. You progress through levels by clearing pieces on the board.

Click here to play Hopnotic Beta.

Other games on the website include:

MultiPlayer Minesweeper: In Minesweeper Flags multiplayer, two players compete to see who can find the most mines. If you click and successfully flag a mine, your turn continues and you can click again. But if you fail to find a mine, your opponent gets a chance… as well as the hint you just uncovered.

Hexic: Rotate any trio of hexes in order to form a cluster of three or more same-color pieces)

Sudokue Multiplayer: As with our original Sudoku game, Sudoku Too provides puzzles of all difficulty levels, pen and pencil notation modes, and a large grid designed for high visibility. What makes this game unique, though, is the opportunity to either collaborate with or compete against a friend.

Jigsaw Too Multiplayer: In addition to all the usual digital jigsaw features – multiple puzzle sizes, the ability to hide everything but the edge pieces, new daily pictures, the fact that housepets can’t steal the pieces – Jigsaw Too provides a large area for sorting pieces, in-game chat, and above all a shared environment where two people can work on the same puzzle at the same time.

UNO Card Multiplayer Game: You can select from some of the most popular variety of game plays, or just play a standard game. And for those who would like to collude and compete at the same time, Partner UNO mode gives you the chance to play two-on-two.