You can spend your earned Bonus Cash in 2 ways:
1) Purchasing Boosters (Winning Multiplier)
You will find certain contests in our games with the option to buy boosters. These boosters help to multiply your winning amount by 2x, 3x, 4x or 5x.
2) To pay entry fee on Contest Join
You will be able to pay the entry fee for all the contests partly using Bonus Cash.
NOTE: The feature "To pay entry fee on Contest Join" is currently unavailable. Keep playing My11Circle for more updates on this.