Recommend games

Go to the search engine, write, best 4-person co-op games, please.

There aren't many 4-person action games like this.

GTFO - you can play

Aliens Colonial Marines - you can play it.

Strange Brigade! - you can play

Splinter Cell - for 2 people

Sniper Elite - for 2

Gears of War - for 2 people

Why not enough, there are enough games like l4d for four people, not counting the closed ones...