Not one to develop exclusively for PS3 or work in the third-person shooter genre, Japanese developer Tecmo has simultaneously broken two of its traditions with Quantum Theory. Let's get the obvious out of the way, this looks like an art nouveau version of Xbox 360's cover-fire based Gears Of War. Not a bad thing. PS3 could do with a hulking, no-brainer blast. The big twist Quantum Theory brings to the pot is that the cover you'll be firing from will vanish as soon as it appears. The game's landscape will change in real time.