Hmm.,,
it just like lottery like others...

so our chance to win all of the amount gathered were 50 % ?

What this is?? Dice,binary,or what??

EXAMPLE

You send 1 BTC to the up arrow's address. And the time is 1:05:55 a.m. (GMT)The fee rate is 1 % which means 0.01 BTC is deducted from your investment. The rest, 0.99 BTC, is added to the up arrow's balance.
The round ends. The final bitcoin balance of the up arrow is 6 BTC, whereas the down arrow has only received 5 BTC in total. Congratulations, your arrow wins! Your share is 0.99 / 6 = 16.5 % (your investment represents 16.5 % of red fish's bitcoins). This means you have won 16.5 % of 5 BTC (the green fish's 5 BTC ), which is 0.825 BTC. In addition you receive your original investment back so the total amount you will be given is 0.825 + 0.99 = 1.815 BTC.


this is just like lottery

i sent to both since i didn't get the meaning properly.

you said "one of the two arrows"

but i think you meant both

Congratulations！  by not sure about one or  two，you lucky get both.

and from now you can deal with our game without fee with the really special address   13cb4Kr96TXiw59FNAN8vvkK63R38KVGCi 

Thx for your attention!

This game is simple ,just two bitcoin addresses and  24 hours a round.  And the arrow with bigger balance will win.

You deposit to one of the two addresses,and at the end of the round ,if you win you will get your rewards automaticly.

The recieve time is Public on the blockchain.info  so it is really fair.

steps:
1.There are  two  bitcoin addresses ;
2.We play the game 24 hours for a round, the address with more bitcoins will win;
3.To make the game running,the fee is raising with 1% an hour;


details for each steps:
1. These two  addresses  won't change(for you to supervise simply);
2.For some reason of the bitcoin system . some of the transaction with small amount  take long time(sometimes 1 day) to confirm. So we calculate the balance the recieved  time and with the confirmation at the end of the round.The bitcoin that we received but haven't been confirmed  at the end of the round we will return them back;
3.For every round is 24hours, so the highest fee is 23%,So deposite as early as you can.

what if both up and down arrows are equal when the round ends?

Come on ,my friends .as time running ,the fee is raising .

There are still 17 members who will have  half fee forever.  and the competitive advantage will help you a lot in the future world war.