A game of real life Portal anyone? Augmenting Indoor Spaces with intelligent projection
Now of course, the hardware in this example is unnatural right now, but these are prototypes and as such have incredible implications to the future of interaction – the hardware would be the least of my problems working on a project like this.
The particle physics interaction starting about 3mins is reminiscent of the game Portal, combine this with a tactile feedback engine and you’re in a pretty realistic (and scary) gaming environment.