If you lose, you double your stakes, and if you win, you start all over on your starting stake. This means that you eventually will be ensured a profit. Follow this example: You bet on the tail. You bet 1$, but you lose, as the game ends with a head. Next time you bet 2$, if you lose again, you must bet 4$. If you win this time, you've placed a total stake of 1+2+4=7$, and you've won 1$ for your efforts. Or if you start of with 5$ and you lose 1st, 2nd or even 3rd so that’s 30$ (it may seem like a lot) but then when you do win you get it back plus an extra $5 on top for your efforts or if. The 1$ payoff is equal to what you would've won on your first bet.
If you start to bet on the tails, keep the bet on tail’s until you win. It’s almost impossible to lose more than 5 in a row (50 % chance each round).
Here you can find a list with head or tails games:
http://gamesofgold.net/r.cgi?4783181
http://www.r-b-e.net/games/coin/index.php?ref=4783181
http://www.defusethebomb.com/?ref=4783181
http://5050.win4gold.com/index.php?ref=4783181
http://www.bet4headtail.com/?ref=4783181
http://www.1goldgame.com/index.php?ref=4783181
http://www.1gold-game.com/lighting/index.php?ref=4783181
http://www.shotkick.com/index.php?ref=4783181
