Warframe

[Buddy_Gecko]

A fun futuristic third person co-op shooter that combines fast action and acrobatics.

I've been playing it on and off, it has a plethora of different weapons from assault rifles, to magnums to all sorts of melee weapons. There are tons of classes or 'Warframes' as they are called each with their own special abilities.

It's in beta right now and is totally free unless you wish to buy weapons and classes (which you can earn using in game money you get doing missions).