It sounds like airsoft/Call of Duty, lol and i do agree with u, with the younger kids playing that they may want to try the real deal........ idk why it needs the co2 to work though
I don't think it *needs* it, they probably use CO2 so there's a POP sound, better than the usual "pew pew pew" you get in your helmet at laser tag arenas. Know what I mean? Gets you more amped up that way.
I play laser tag with my nephew for his birthday every year, it's a lot of fun in it's own right. There's also something to be said for not having bruises when I show up at work on Monday morning...