They are multiple instructions depending on what you do. Here are the controls... Entrance: Use up arrow to move towards the castle. You can also move down. Main room: Move with arrow keys. Maze: Same as Main room, except that you move instead of the platform. Go-Karts: Accelerate: Up arrow. Turn: Left/Right Arrows Museum: Move with left and right arrows. Knight Race(Betting): First, select a knight who you think will win. After that place a bet(1-10). Enjoy the little animation. Your Room: It's just a room, that's all. If you touch someone (not in a bad way), they might want to talk to you. Also, you enter the room(s) by touching their caption. Such as the orange Go-Kart Text.
You can finally be in a castle in scratch. I hope you guys enjoy :) Leave any future ideas or anything else in the comments. Also, if you find any glitches, let me know