Quell Zen

This puzzle is a masterpiece of lateral thinking. Some puzzles take days and up to hundreds of tries to complete to get the perfect solution, and then you realize that the solution involved thinking out of the box and that moment of insight is delightful. I suggest never using hints or solutions. For an even more profound challenge, try just looking at the puzzle for a few minutes and trying out combinations in your head until you got it and then complete the puzzle to perfection in just one play. I hope the authors make more of these games and please keep the same high level of quality.

I played through this a year ago and have just come back to play through it again. It's my favorite relaxing game. Beautiful design and music, no ads, puzzles that are challenging but not impossible, and solutions to access when you get stuck. I also love that even after solving levels I can go back and replay them until I get a perfect number of moves or find the hidden gem. The automatic skip feature that becomes available whenever you've done both those things in a level is awesome.

Decent premise, calming music. Controls are pretty bad, especially on levels with multiple orbs. It's also very frustrating to be in a "hidden" level and accidentally return to the previous menu or level, only to have no way back except to replay the original level and try to remember where the hidden portal is. I kept getting kicked out of the black hole level and having to replay another level just to get back in. Would recommend making all hidden levels selectable from the menu once unlocked.