How to challenge
On the challenge tab in the funnytowers game you can see whitch other members are online. At the bottom of this tab you can choose if you want to be challenged for free or real credits. You can also specifie the minimum and maximum bet.

You challenge someone by clicking on the player in the challenge list, the member profile will show a challenge button. You will be asked to specifie your bet. After you pressed the challenge button you will have an oportunity to chat with your opponent and you will be able to adjust your bet. The game starts at the moment that the player who is challenged accepts the bet.
During a challenge both players get the same cards. After each level you wait for each other before you can start the next level. The level will start automatically. You can't walk away and take a break while you are in a challenge.