Described by my partner as 'the game I hate where you're a box and you're inside a box and you're outside the box', this a great twist on the Sokoban formula.

Big fan of the critical path puzzles never really going too far in terms of difficulty, but with separate off-shoot challenge levels being available on each themed stage if you want to explore those ideas further. The post-game challenge levels can be a bit obtuse when mechanics are piled on top of each other but I guess that's where it makes sense for the puzzle design can go as wild as possible.