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.
Okay, Person C. You can teleport, but only one bodypart at a time. My wish: I wish I could charge phones with my hand.
Okay, Deestan. You can charge phones with your hand, but only very slowly and the phone gets uncomfortably hot. My wish: I wish public transport was free.
Okay, Pankkake. Public transport is free, which is a great boon to the plebs but obviously have the the car manufacturers and other corporate lobbyists irked. They lobby the government until funding is severely slashed; eventually passenger train infrastructure starts to crumble, busses are frequently out of commission, and no one can get anywhere on time using public transport.
I wish everyone in the world always had enough food to satisfy their basic nutritional needs.
The food is absolute nauseating in taste, despite being extremely good for people health.
I wish for an efficient way to create fusion energy to be discovered.
Wish granted. This causes weapons of mass destruction that rely on fusion tech to be much easier to acquire, plunging the world into a new cold war.
I wish I could shape-shift into any animal at will.