Each week Ross Rubin contributes Switched On, a column about consumer technology.
The first thing worth noting about Sifteo Cubes -- which recently became available for pre-order at $149 for a starter pack of three that should start shipping this month -- is that they are not geometrically true to their name. Their square surfaces sit atop depths that are less than half their side length, so even stacking two Cubes won't produce three-dimensional symmetry. They are a little smaller than the game pieces from the much more limited and less expensive Scra
