"The very nature of Quake IV - that of high action and invasion - means that it's far more varied than id's last offering. From the Aliens-style jumpship opening and subsequent crash landing onwards, the player is surrounded by other marines - both to fight alongside in squads and to watch die in hideous ways. While opening a door in Doom 3 would invariably prompt a scripted 'jump point', opening a Quake 4 door results in sequences that involve marines either getting mangled or pulling off some particularly nifty gunplay. There's always stuff going on to grab your attention - a real cinematic edge - and what claustrophobic solitary adventurings there are deep in the guts of the Strogg war machine are neatly interspersed with hurtling around wide open spaces on the surface in Halo-esque hovertanks and battling alongside other members of Rhino Squad. You also come across a Badger Squad, but needless to say they're not quite as cool."