Evolve looks like a really fun game. It looks like a fairly unique experience, focusing on 4v1 co-op modes. The team of 4 gets to pick between several different classes and are tasked with taking on the 5th player. The way this is an even match up is that the 5th player is in control of one of many creatures. These creatures can evolve during the match, and once they're level 3 they can really cause some chaos.
I think this game will be great fun, but I'm not sure how they will keep this game interesting as it appears to be very linear at the moment. With a good variety of game modes, weapons and characters to play as, I'm sure this game will keep the average player entertained for a decent amount of time.