Better calculate max bet from max bankroll, use the Kelly factor:

http://www.albionresearch.com/kelly/

And choose a valor between 0.5 and 2 Kelly.

I'm giving a big help here if you didn't already thought about this, you HAVE TO have some strategy of bankroll management, Kelly is the best and most common technique

Thanks a lot!

But I don't know how fill all fields on calculator.

example:
Gambling Bankroll: $250
Odds offered: ??
Your estimate of your
Probability of Winning: 50%
Bets must be multiples of: $1 ??
The minimum bet allowed is: $2

I won 0.004BTC in "DRAW 0.004 every week".
I wait my winning. When I will receive it, I try again..
Thanks a lot.

Yes it is very fair but no worries about it because there are many websites to visit to have more bitcoin by gambling. So yes i have much patience to every website.

I just found out your about your giveaway, is it still available? And about your giveaway, you mean that on every week you give 0.004btc for one winner on every 0.0005 btc placed? Does it mean if we put many bets here so we have higher chance to win? Or there is only 1 max bet?

And about your game? Can I send it through exchanger? And about the payout is it auto after I got my winning?

I offer add Jackpot.

Player has Hash of bet (provably fair): 6159508da43cd3242687dd838550698a90a1c0ea213845804d769e2ee4113032

Take first 2 digits.. 6159508da43cd3242687dd838550698a90a1c0ea213845804d769e2ee4113032
If first = second winning return x5.

Take first 3 digits.. 6159508da43cd3242687dd838550698a90a1c0ea213845804d769e2ee4113032
If first = second = third winning return x10.

I does not add jackpot yet.
Need calculate chance to win jackpot.

When you add it, please reply here with the chances.

Ok, I will post here
Thanks

No, my game has house edge 1%. It's very good for players.