Pico is guarding the castle and he won't let you in unless you have the exact right amount of crystals! If you have too little or too many, you can't get in! Use the set and change blocks in the Variables section to make your Crystals variable equal to the amount Pico wants If you see lighter crystals, that means you are missing those crystals. If you see crystals with a red warning sign, that means they are extra crystals and you don't need them.
