Reckon you're good at puzzles? Give Sokobos a try on Steam from the 1st of April. It's your move...
Another Sokoban puzzle? Am I mad? I have been going mad, that's for sure. Here's a (sort of) review of Dark Sheep, available on Steam.
So, you think you're a problem solver, eh? Try Hack Grid on PC - notably the Master Levels DLC, and when you're done prove you didn't sweat.
Reckon you're good at puzzle games? Why not make a note of the upcoming Sokobos - a Sokobon type game that'll treat you with a nice little Greek tragedy. If you're good enough.
Think you've got the moves to run through a dungeon full of multiple floors and 'orrible things that want to hurt you? Here's a Dark Crypt review for your eyeballs.