I had to refresh the page right off rip. After sending my rocket toward the first level, I completely overshot. Rocket went off page. Never came back. No indivation it would.
The controls were explained well enough, at first. But I could never get the rocket in the direction I wanted to go. The line on screen was never actually where I was pointing. I may have been utterly missing something, but I was having a hard time getting any more than a third of an orbit complete before flailing about.
Great visuals, nice music choice. The graph paper and math sketch theme thing going on is cute.