GinT

GinT is a tetris-like game that is implemented in LSL scripting language within the 3d World of Second Life. Features include hard drop and a 2 player competitive mode where players can wager on games in "Lindens", the micropayment currency of Second Life which can be bought and sold for US dollars.

GinT may be the first implementation of tetris with a built in wager feature.

http://www.slexchange.com/modules.php?name=Marketplace&file=item&ItemID=90420