The pixel art and music are both great. It's a tough game though. I would say to maybe have a less steep difficulty ramp up, but I think I may just be really bad at these games.

Wow, nice game, I really like the pixelart graphics and atmosphere.. the levels are challenging..  Great Job.

Really nice puzzle game and actually really challenging! I think it would help the player a lot if the static blocks have a different color in the other world, might be easier to remember the layout then and saves a lot of switching back and forth. I really liked it though, the animations are also really good, nice work on this!

I like the simple "sliding blocks" mechanic with a connected worlds twist. I wish the travel to a different world would be a bit faster, cause later levels require quite a lot of back and forth. And the music is really fitting, good job!

WOW, took me back many years trying to understand what's going on in my Nintendo Color playing pokemon. Congratulations. The feedback I could give you if you want to take it a step further is make it a little easier at start, have the levels locked and give the player the choice of skipping (gives a better sense of accomplishment and give a little more help on the connected worlds stuff because I solved most of them by luck. Keep it up!