Progress: I'm on Day two and I've managed to create the basic game board, comprised of 9 squares, which each light up as the custom cursor travels over them. Already it's started to get difficult, and that was the easy part! I can tell this is going to be far more tricky than first anticipated.
Ah well, onwards and upwards!
PS: questions for any veteran designers out there - how complex were the first couple of games you made, and what did you learn from the experience? If you could go back and talk to yourself as a budding game designer, what would you say?