(I am now in a rush to test as many games as possible to help, so please do not mind the cursory reviewing style.)
I like the in-game ‘graffiti’ instructions at the beginning! It’s functional (and not that far from having a gratuitous static instructions page thrown at the player’s face as I some do).
controls are QWERTY-only instead of layout-independent
Nice rotating movement! I like it, wheely. Nice effect when jumping.
Sounds would have added life.
nice horizontal cycle when exiting the screen
takes good hands coordination and response time; piano players might be at an advantage!
the concept is really fun, I enjoy it! :) It reminds me loosely of Super Mario World, when you can guide a 5(?)-lengthed platform made out of five blocs (although it’s a bit different).
oh the other hand, loosely theme-related (mainly the die rotation)
nice practical details (the enemies wait for the player to start), as well as visual ones (transitions)
Stopped at level 4.
the game page states there is an Easter egg, but I see nothing special inside the ‘images’ folder, so I am calling your bluff on that one ;)
You say this is your first game, and I find it very enjoyable, so you must have a good sense for gameplay. I will definitely give you points for this. :) If I had to criticise, I would just add you could have used the theme way more and been more original/surprising. Still, good game.