Worked well even in the browser - if in full screen mode! Before that I couldn't turn around much, as the mouse only worked while in the window...
I'm not such a big fan of shooting games, and given that the setting is kind of wacky, I expected some wacky and fun intro. Starting right in the middle of the action without quite knowing whom to shoot and what to do, wasn't ideal. Graphics are a bit inconsistent, but smooth.