Nice! Reached level 16 before risking a move and blowing up :O Catchy tune too.
There's a small formatting issue when you reach level 10 - the additional character in the level number pushes the "/ 20" onto the start of the next line.
Thanks! If you're able to create a cpr file, I'd love to play this on my GX4000 :D (And even better if you could make it save hiscores on the PicoGX... ;) )