Pros
The benefits of working here can't be beat. The company as a whole tries hard to reward you for good work.
Cons
The lack of a solid HR department results in a decent amount of sabotage and immature behavior. Company wide, people commonly get in shouting matches instead of remaining professional - this also includes upper management (except Tim Sweeney, he's constantly both kind and professional). It is very common for good employees to get forced into smaller and smaller job positions and suddenly "resign" after rubbing someone the wrong way. This happens so often that HR seems to be unaware that it is going on until after it is too late. There are too many upper level employees who make emotional rather than practical decisions. Contractors are commonly treated as disposable, even if entire features are built off of a single individual's work. It can be very difficult for a contractor to be converted to full time, and it is common for them to be severely underpaid when they are converted. It is even more common for contractors to eventually leave after being taken advantage of or led on for months or even years.