LOVE THIS!! Your best game yet.
Small bugs where I had entered a code in a previous save, and had to enter it again when revisited the game. Also would be nice to choose the save points.
It took me a while to realise the chisel wasn't actually a chisel but a screwdriver, and I struggled to read the text in the books to determine the planet order, even zooming in it the text was quite feint. But some really amazing puzzles, well done!!!
Oh yeah.... escaping out of what was presumably the toilet? Questionable... but still an awesome game.