New build:
Roketz WebGL Alpha 11_10_2015
What's new:
Now all levels are working. I've also added the various environmental dangers such as auto-guns, air vents, repellent fields and radiation.
Spent a bit of time tweaking the physics, I think the ships feel roughly similar to the original game now - they obviously need tweaking further to allow for different engines/equipment etc. but as a basic starting point I think it's not too bad.