If your really big on military/swat games check out Airsoft(dont buy here, prices are high).
You can actually be a sniper with this stuff. I did the math once and painball just barely beat it force wise, but airsoft has different kinds of ammo to change that(cheap plastic, good plastic, paintball, good paintball, frozen paintball, metal, steel and some old bbs pellets will work(not todays .177)).
But if you just like running around with this stuff you might like paintball better