Simple game, a person makes a wish. Anyone else can “corrupt” it. Then that person makes a wish of their own, and the cycle continues.
For example:
Person A: I wish I had 1 million dollars.
Person B: Wish granted, but they are Monopoly dollars. My wish: I wish I could fly.
Person C: Wish granted, but sustaining flight requires 500 calories per minute. My wish: I wish I could teleport.
etc.
Granted! Your immune system becomes so bolstered it became autoimmune as you eat your own brain out.
I wish it’s less work to find a girlfriend.
Granted! As technology develops rapidly it’s become possible for companies to offer AI girlfriends for those seeking convenience.
I wish I could take a ride on a space shuttle and walk on the moon just once.