Although it’s a complicated piece of kit, it could easily be simplified to produce a clever electronics puzzle game. Remove the colour LCD display and the PC software and throw in a Dot Matrix display and some infrared modules and you have yourself a nice little project. Let us know how you get on.
The Sifteo pack can be bought for $149 and comes with 3 cubes, a charging dock, Sifteo Creativity Kit™, and the wireless PC link. However at the moment they only ship to the US and Canada.