Very similar to the ball balance game on Wii Fit, The Incredible Maze has you moving a ball around a maze to make it fall through the hole goal.
It's easy to spot communication issues if your child has never verbalized, but more subtle clues can fall through the cracks if parents are uneducated about associated warning signs.
Grease tends to build up in this area, and bits of food also fall through the grate and adhere to the surface during cooking.
Buyers losing a deposit when an error from the broker causes the sale to fall through.
It didn't fall through but remained where it landed.