サバゲー (Survival Game)
Airsoft is a pretty big industry here in Japan, whether it be the manufacturing of 1:1 replicas of real handguns, rifles, machine guns, mini-guns(!), etc... (be sure to checkout the link), or the playing of サバゲー ("Survival Game" which is just like paintball in the US, but with full-auto replica weapons).
Been about 6 years since I last played (due mainly to having kids then ;-). Was *great* getting back into it, as I love the Sport. An extreme workout in that your constantly sprinting, ducking, sprinting, and ducking!
Non-HDR shot of me and a few of the people from my team after we "captured" the other team's base on the first game of the day.
Games average 30-50 a side for 15 minutes of game-play, with everyone carrying, and generally shooting, several hundred rounds of "ammunition" (6mm plastic bio-degradable bb's).