Airsoft is lots of fun from little kids just beginning, with cheap springers, who will later evolve to actual "airsofters" with the expensive good equipment, and play at a much more "hardcore" level like perhaps in a "op" operation, where large amounts of serious airsofters play against each other, in teams with even realistic war settings like "mil sim" military simulation, where alot of the facts and how the game is played is like real war. but heres just a quick link to a cool video from one of the indoor fields i play at in Fallriver
link- http://www.youtube.com/watch?v=HS0VtIBdxmQ&context=C3ee3182ADOEgsToPDskKknjhm04FRZ7fbRLtOddWY