Possible endless game
If you make the snowflakes appear even below the snowman, the game can go on forever!
I managed to jump "out of bounds" because of the snowflakes below me kept me going, so there were a time where the blue of the sky slowly faded to white and stayed that way.
You could make the game stopped producing snowflakes below the snowman and this could be better... but not quite because there are a lot of games with the same "jump on X thing to keep going up" formula