Feels like this could go on forever, there is no challenge really...
As long as you have a clump of 4 tiles, you can reorient yourself however you want and there is no penalty for doing so and taking it slow. That way you pretty much never should lose lives unless you're just accidentally doing a wrong match. I guess the "difficulty progression" adds more and more holes to the floor so at some point you actually might stumble on a spot where you can't reorient anymore and are forced to take damage.
You did a pretty good job at showing even the non camera facing faces a little bit so that one could more easily "attack" up and right too but there were still quite a lot of spots where I just needed to rotate back to make sure. I guess it would of have made more sense to have the player progress to left or have the camera tilt so that the front face was the visible one. Now it's most of the time showing the back face which isn't that useful. Even though it is the same as the front one but my brain didn't allow me to trust on that fact most of the time. 😅
The UI would have needed some more love. The text overflowing the box and not having any padding on the UI elements makes it look sloppy. The whole help screen looks like it was hastily thrown together in the last second with all those misalignments, spelling errors etc.
So yeah, it would kinda need some additional mechanics like timer or something to make it less trivial. Bug good job anyways! 👍