Probably one of the best co-op games ever made.

0:00 - Intro
0:20 - Trailer
0:42 - What's it about?
4:00 - How many players?
4:11 - How difficult is it?
4:34 - Does it have split-screen?
4:52 - What modes are there?
5:59 - Mods
6:45 - What platforms is it available on?
7:07 - Is there controller support?
7:11 - What is the price?
7:40 - Conclusion