Idea:
Every lost bet should go into a jackpot with a percentage.
The one who wins something could then possibly win the jackpot (as an extra win)
The percentage could then perhaps also be set in the panel if necessary.
Example:
Normal Win:
H4nSolo: !gamble 100
Bot: You have WON! Now you have 200 Points…
Lose:
H4nSolo: !gamble 200
Bot: You lost your bet. The Jackpot increase to 20 Points…
Jackpot Win:
H4nSolo: !gamble 100
Bot: WINNER WINNER CHICKEN DINNER! The jackpot was hit. {username} just won the jackpot of xxx points and there double bet…