DaisyWants the Wolluk

The term "mark" (meaning sucker) originated from carnival game operators marking a gullible
person by patting them on the back with a handful of chalk. Other game operators would
look for this target and entice them into playing their rigged games.

Nowadays, carnival games shouldn't be completely rigged (that's illegal) but they still are usually far more difficult than they appear. Some examples are:

🎈🎯 Balloon Dart Throw - They make this game harder by providing dull darts and the balloons are underinflated, making it far more difficult to pop.

🏀 Basketball Toss - This game appears to look normal from the angle you shoot at, but the hoops are actually oval shaped, making it a far tighter fit for the ball to get through. The balls are also overinflated, ensuring that they'll bounce off of the rim too strongly to go in.

🥛🎾 Milk Bottle Game - The goal is to knock down a stack of milk bottles. They make this harder by using heavier bottles, some are even weighted on the bottom to make it less likely to tip over.

source: https://www.rd.com/list/rigged-carnival-games/