Hmm that sounds like a fun idea.. lol. Hoster sets a number, and the participants guess.. Participants would guess a number, and the hoster would say the number range from that number give, eg number given by participant is 52 and the actual number is 53 (assuming first 1, the hoster would say 52 to 100) and then the guy who guessed the number is eliminated(or if the guy before him says 54 - so the range is 52-54) then the next guys get eliminated. Last 1 standing wins.. Problem would be that it could take some time.