I know of no other game that uses this concept of 3-D manipulation for the sake of puzzle-solving. I think it's a great concept. The controls are a bit awkward (using keyboard spins cube too fast, using touchpad is aggravatingly touchy). The art is super and the overall atmosphere is cozy. Maybe consider different shapes (cards to flip, pyramids to rotate into molds) and some sort of upgrade system or other novelty (maybe the cubes "open" after the puzzle is solved to reveal a picture on the united-cubes' interior) 4/5
Needs a real fix to sticky keys. The workaround didn't work, making the game unplayablle (though watching the hueman jump repeatedly was fun for about 10 seconds).
the "difference" on the red tree level was missing on both sides. randonly clicking revealed that the missing object at the bottom of tree was absent on both sides. tried to replay, but I only get a blue sky and number "1" on the screen.
last level is a bit ridiculous. all preceding levels require almost no strategy and last level slams the player with wave after simultaneous wave of dozens of enemies. ok, I get the hint. I quit.
the difficulty spike is a little insane at level 7. On level 6 we need an average of 181.25 points or better per turn to pass to the next level. On level 7, we need 188.88 points or better per level to pass... with no borders!!! I suggest lowering the point threshold for level 7. Borders are my crutch!
 "Stick War"){kind=icon}
 "Starlight 2"){kind=icon}
 "Picture Cubes"){kind=icon}
 "SteamBirds"){kind=icon}
 "Pathillogical"){kind=icon}
 "BigTree Defense"){kind=icon}
 "Primary"){kind=icon}
 "Horror Plant"){kind=icon}
 "4 Differences"){kind=icon}
 "Abduction!"){kind=icon}
 "Alice is Dead - Ep 2"){kind=icon}
 "Tuper Tario Tros."){kind=icon}
 "Hell Tour"){kind=icon}
 "Wake Up the Box"){kind=icon}
 "Cover Orange"){kind=icon}
 "Time Kufc"){kind=icon}
 "Epic Battle Fantasy 2"){kind=icon}
 "The Space Game"){kind=icon}
 "Electric Box"){kind=icon}
 "Globetrotter XL"){kind=icon}