if someone complete 100 he/she will get refund 100% of participation fee + share of portion of deposited participation fee from failed users + the portion of Prize(The amount is flexible). so if all the participant complete and prize amount is zero then completed user get back 100% of fee only. But we can be happy if all the people complete mission. how wonderful... this kind case may be a issue between how to think... is this a mission with good willing or mission game(war).. @cryptomission will be a good tool for better life not for fighting. thanks.