http://blackcoinbets.com/

Rules:
Do not send from Exchange/Shared Wallets
Bet before end time, unconfirmed and late bets will be refunded -fees.
All Bets are final - No Refunds or Changes
Earlier bets get higher payout

How does playing work?
Bets are accumulated into a pool and are weighted by time. So the earlier you bet the more of the pot you will walk away with if you win.