thank you for trying my game . you havent used the force field till now tho click space to use it and i changed a lot of things in the game but i can't post it yet like the difficulity was too hard XD and lot of new things and better control .
lol im really happy that you made it that far to upgrade stuff XD i never thought someone will make it that far. next version of the game is way better and easier.
about the planets changing everytime i just made an array of planets and made a new array wich size is 3 and takes 3 random planets from the first array and put it in the start function so every time you start it gets 3 random planets from the array :D