Marble City support
Marble City is a building game for kids about 6 to 10. Snap ramps, planks, bouncers, boosters and launchers onto the grid, drop the marble, and watch it roll to the bucket; every level you solve raises a new building on your city street.
Restore a purchase
Open the grown-up area (the Grown-ups button, then answer the question) and tap Restore purchase. The unlock comes back on any device signed in to the same Apple or Google account that bought it.