I was lucky enough to get in to a recent Back4Blood beta and a brief look at the game. A fun game that resembles its predators, Left4Dead in game play but also differing enough to make the game feel like something new. Like the former games, you can play a co-op campaign game where you rush around slaughtering your way through zombie masses.
Beyond the game place, the characters you can play as are pretty entertaining, each has benefits that support the group in some way. I took a particular liking to Hoffman. I had to pick him up because the initial characters I wanted to play were taken by friends. (You know who you are!) But he ended up being my favorite, and I will probably continue to play him once the game comes out fully. I might dabble in others, but to be honest, once I find a character I like, I tend to stick to it.
Now, moving we have the particularly original, (at least for this type of game) deck building system. As you play, you gain points which allow you to unlock cards which you can make into decks. These decks have a variety of benefits for yourself and the people you are playing with. I had a lot of fun putting ammo benefits in to my deck.
So there is a lot more to Back4Blood, but I really think you should play the game to try it out yourself. And in case you could not tell with that suggestion, if you love a good zombie game, you will want to pick up Back4Blood once it goes live!