Thanks for playing. No your not missing anything, it's just not working properly for some people (5 so far including my brother now as well lol) but working fine on my computer so it's impossible to see the problem. Can't think what it could be, never had an issue with Gdevelop before and have made 34 other games without problems. Such a shame because it's a complete game with 6 levels and a fully mapped out upgrade progression system that a lot of people can't see because of a bug I can't see :( The rocket should launch for 7 seconds with 200mph for top speed to reach 1 mile for the first launch but for some it's doing 3 seconds launch with 127mph. I have already added a tutorial to it and tidied up the script, but I can't upload the patch until after the voting ends.