Dust Heap Survival

Create and save as many dust heaps as possible

Move the heaps onto places with dust so they get bigger.

Make two out of one by putting your fingers onto one and ripping it apart.

You can only make new heaps when the heap you are on is big enough.

Avoid them getting sucked in by the vacuum cleaners.

Complete 40 levels, 10 for each vacuum cleaner, by having the necessary amount of heaps in the level.