Thanks for giving the game a play! I wanted to do an interactive tutorial but I ran out of time so I had to settle for an instruction manual instead. As for getting a quick overview of what the input/outputs are, our hope was that since each planet is coded with a distinct symbol, over enough playthroughs the player would get familiar enough to memorize which symbols corresponded to which inputs and outputs. But you are right that there should probably have been a table of planet input/outputs for reference. I'll see if I can add that to the game page.