I thought this was fab idea for my son's next birthday but then I wondered if they were a bit too young 
. There's a 10min briefing then they'll pretty much be in the dark for 20mins while game is on. Game is supervised with no running so is pretty safe. Food/cake etc afterwards.
Was thinking of inviting 10-12 boys, most of them will be 6yr as my DS old for his year. Do you think they might be freaked out or will they love it?