Great third person shooter gameplay mixed with some crafting fun.
I just started playing CrimeCraft about two months ago and it's kept my attention for nice portion of that time. The tutorial systems sets up noobies and then releases them out into the "real world". It's a steady progression in level, with matches being divided by a players skill and how dangerous his or her layout is. Another thing I enjoy about the game is the ability to choose a profession and create items. Like other MMOs, you can place your created items on the auction house and sell to players even when you aren't logged in.
Overall, CrimeCraft is fun and seems underrated. From what the community and developers say on the forums, the game has changed much since launch and is looking to bring huge improvements very soon.