What's inside the box?

What's inside the box? A lot of puzzles!
Can you solve all 100 and discover what's in the box?

A Bart Bonte / bontegames puzzle game.
Need hints? Use the hint button at the bottom in each level. There are 2 hints for each level.
With the premium unlock in-app you will not get ads before the hints and you will get a skip level button after asking the 2 hints in each level.

(note: with the premium unlock the skip button will appear AFTER asking the 2 hints in each level)