THE best coop fps on the market. It's like l4d with cops and robbers. Zombies dont shoot back, but the SWAT team will! A nice upgrade system with tons of achievements, upgrades, 9 heist including secrets and different ways to go about playing them, depending on your playstyle. Playing with friends or online players with mics and teamwork is epic. Payday is exciting and action-packed; you will truly feel like you are robbing a bank. I highly recommend this game as i prefer it far more than left 4 dead, killing floor, or any other coop for that matter!
IMHO, the best twich shooter out there and its free! AAA+ title, gun mechanics, customization, graphics, sound, and game modes. Far superior to COD in every aspect. The customization options in this game are endless, you actually build your guns from the ground up (receiver,muzzle,barrel,magazine,scope,stock,weapon tag, camo & color, not to mention a trading system ). You also can customize gear that you have including chest armor, leg armor, helmet, nades, melee weps, camo color, etc. If you want the best twitch shooter around that you can play for countless hours (and its free), then look no further.
Even in its alpha stage, this game brings the immersive gunplay and audio to the table. It's like a modern day Red Orchestra, if you're a fan of realism, buy this game and support the developers!