Five Win Match

Turn taking brain teaser game.
See who's smarter than you!

*Compete with your friends or other people in Google+
*You and another player will get total 99 coins.
*On each turn, each player bets coins. Whoever bets more will win a turn.
*If one player wins 5 turns first, he will win the game.
*Total remained coins will be shown as a 5 different level to each player.
(e.g. 80 ~ 99, 60 ~ 79, 40 ~ 59, 20 ~ 39, 0 ~ 19)
*When a player bet, it shows if the bet is >= 10 or < 0.
*You can guess the number that another player bets. And try to bet slightly more to win.
*Each player can any number between 0 and total remained coins.
*The first turn is switched on every turn.

Good way to prove that you're smarter than your friend!