http://quadiq.binarycocoa.com/
-I would've liked to be able to undo a turn, willing to even give a significant amount of earned points for it
-After some time playing, it got really boring since you really just get the hang of it and don't need to think anymore. I mean that's really the point of the game is to relax right? I'm not saying to make it harder, but maybe you can think of some things to make it more engaging. Maybe more points for certain patterns like completing blocks in a certain color order. Basically it got really boring doing the same thing and getting the same rate of points. There is no sense of exponential gain for becoming better and more efficient at the game. But that may be the goal after all, to be relaxing.
EDIT:
Additionally, this game is simple enough to have keyboard navigation. Move with arrows, wasd, or hjkl and space as the action button. For fast typists like me, I would've found that to be very pleasurable.
I'm currently thinking of some ideas to make things more engaging but I do also want to keep a fine balance of excitement and relaxation (or maybe ill think of it like a loop to bring players back to relaxation after a 'plot twist' of sorts). I think different types of shapes is a good idea. A friend of mine suggested a 4x4, for example, that gives you 400 points. I've thought of other shapes but I want to make sure the algorithm is as efficient as possible, because that's part of the goal for me, learning better search algos and what not.
I'm also trying to figure out ways to make it more aesthetically pleasing as well as figuring out sound effects. I also like the idea of having some sort of integrated YouTube or Spotify player (kind of like how rocket league has a Spotify widget in the main menu).
I appreciate your feedback!