I'm often the high scorer whenever I take my son to play laser tag. The indoor arena is very similar, with doors, windows, ramps, and other realistic barriers. It can handle about 20 people, and is usually populated with "kids" between 10 and 30 yrs old.
No real bullets, but there are live people "shooting" back at you, and if you're hit, you can't score for 15 seconds, which is a lifetime in a firefight and will keep you from winning. It definitely teaches you to pay attention as to how you use cover!