Don't take it the wrong way but the game itself doesn't feel very connected to the theme itself. Nothing really feels "chrismasy" about it apart from maybe the "marry christmas" line that's being said at some point in the game. The sounds are more fitting to an 8-bit styled game unrelated to christmas, so making a melody that doesn't even sound like it belongs to the chrismas spirit just strips the whole game of it's purpose.
There is also an exploit in the game due to how big and close some of the tiles are: I was able to simply hold both the up and right button and ended up not falling for around 5 minutes.
Overall the game could definitely be more polished. Again - This is comment is not out of cruelty, but our of critisism