If I started on level 10 I would have quickly given up. For some reason it took me ages to realise I could walk through the spikes, and even though I completed the game with a staggering 124 deaths I really enjoyed it and found the end really cool with the soft bouncy balls. I think this style of game is one of the most fun escalation games. It keeps you wanting to carry on because there is just one more additional obstacle each time. You've done a really good job!