Five levels, tested with 2-4 players with four being the recommended number. Comes with Anvil Shapes patch (something to do with naked aliens). 1.) Boondoggle; a multi-dimensional environment with four portals. Not sure what is meant by portals here. Very straightforward square playing field, small. 2.) Spiro Caves; large arena with twisty stairs (tunnels) leading off main field to sniper slots & ammo refresh. May be slow due to size & number of tunnels. 3.) Terminal Carnage; built to look a subway terminal, and it does! Long rectangular playing field, lots of elevators to confuse, one transporter, 1x & 2x, fast paced. 4.) War & Remembrance; team war environment, think it's cool! Square divided by boiling lava pit, almost impassible due to ittty bitty span activated by grenade to a switch, each opponents side. Transporters to sniper slots. Very fast paced. 5.) Gymnasium; looks like a Gym, is a Gym! This is a very clever layout with bleachers overlooking in-your-face playing field. Girls locker room, oooooh. Open the window slot & fire, hitting switch & chicks and here is where some good solo play comes in! Don't forget to stand on one of the toilets & open sniper-slot window to main arena. This one's witty & fast & we suggest you try it.