UP2037603: Absolutely brilliant graphical design (I especially like the small detail of the exhaust glowing) and easy to access gameplay. Pressing space slowing your fall then speeding up rather than immediately moving up is a very good feature to include as it forces you to be careful with going too much in one direction then not having time or room to escape so it shows how well designed this is.
I did find that the difficulty does increase a bit too fast once you get to around 30 score as the screen was a bit too full.