Congratulations on making and releasing your game!
It's an interesting concept (and something I considered too for my game initially), but had some difficulties playing. For example, I didn't think to press arrow down to crawl (initial tutorial), and I couldn't get past the big gap with the four white blocks on the ground (I believe it was the 3rd level). As the previous commenter said, it was strange for me that I couldn't make the jump as a young 20-something and able-bodied man, but I could at 71?
Anyway, happy I played it, thanks for making it!