Thorsten Blum Niko Vahrenkamp Kai Welke Ole Ciliox Richard Gutleber Thomas Hawranke Space invaders 360: an interactive multiplayer gaming installation that makes you move. 39-43 2008 Mindtrek http://doi.acm.org/10.1145/1457199.1457208 conf/mindtrek/2008 db/conf/mindtrek/mindtrek2008.html#BlumVWCGH08