So this is based on fixed price on bitstamp? Low or high things usually is for gambling but is there any house edge on this game? And how did you calculate the net profit percentage amount?
►A new game starts every day at 06:00 UTC and 18:00 UTC.
When game starts, the starting price of BTC/USD is defined (the price is fixed by the 2 decimal place) according to Bitstamp Exchange.
During the next 12 hours bets are accepted.
After the end this period, another 12 hours pass before the final determination of BTC/USD price to avoid possible manipulation of the price in order to win.
After determining the final price, a comparison of the starting price and the final price is made.
If the final price is higher than the starting one, bets placed on position "higher" are winning, if the final price is lower than the starting one, the bets placed on position "lower" are winning.
►The prize fund is formed of losing bets.
The prize is distributed in accordance with the volume of winning players bets.
Fees for participation in the game of 5% are charged from the prize fund (from losing bets only).
Winning players DO NOT pay fees.
►If you win, you get your bet back in full as well as a part of the prize pool according to the amount of your bet.
The higher your bet is - the more is your share of the prize pool.
In case of loss, you lose your bet, and it fully goes into the prize pool.
No additional fees are charged.