How about each ticket has an equal winning chance? So that if a player wants to increase his/her chances of winning, he/she will buy more tickets. It is going to be his/her option based on how much he/she really needs to win or how much he/she is willing to shell out for the game. As to the odds, isn't it just a jackpot, 1st prize, and so on?
...the winner will be decided by the players itself.
What exactly do you mean by this? How would you do this?
No, we are not going to have any first, second, or third price.
We are just going to have 3 numbers displayed for the people to select, a user can select only one number and at the end of the day the number which has got less number of selections is going to win and the money on the other two numbers will be distributed to the winning number calculating the odds.