Bonus Puzzles
There are several hidden bonus puzzles in MARBLE DROP that are accessed when a given puzzle and an additional challenge are solved, summoning a puzzle within a puzzle. As a reward for your diligent effort and resourcefulness, the Bonus Puzzles are easy puzzles, offering substantial point bonuses, as well as many black marbles which may be used in future puzzles. You will note that the slots on the exit bins are black. Steel marbles hitting a black slot will be destroyed. But any color marble except steel that reaches these slots will turn black, so that when you are finished, you will have created new black marbles without having to purchase them. There is always a need for more black marbles. No, really, you’re welcome.