In my opinion, 4-directional control is the best control scheme in video games. That's why I made a puzzle game about 4-directional control.
4-Directional Control My Beloved is my latest puzzle game (and probably my last before cohost goes read-only) with a bit of rule-discovery aspects. I won't spoil anything here, but let me tell you, it was rough to make it to the finish line. It has a complex game system, and I reiterated a couple times on the first half of the game to make sure players understand the mechanics. It also has an esoteric level data structure and I couldn't use PuzzleScript to design levels like I usually do. But I think I managed to get it right in the end 
You can play it for free on itch. Enjoy!