I went and designed and programmed the third floor of the Giant's castle. It will be very tight, but I think I will have enough room for four floors and key code. Here's something interesting I did. Here are rooms 13 and 14.

Since I had two exits on the right from room 12, I figured "Why not do that thing I did from the beanstalk where you need to go back a screen before continuing?" So that's what I did. I think I'll make the fourth floor's color be "light grey", whatever that means. Orange would blend in with Jack's skin and red would blend in with Jack's pajamas. I also found and took an attempt at fixing a bug about horizontal movement when colliding with the wall. That wall collision coding is difficult.

One interesting thing to note is sometimes it takes 3 or 4 or 7 attempts to get O2EM running (the record is 11), but this time all the number of attempts was 1. I wonder if the computer got tired of trying to anger me or if something good happened, like with the latest Windows update or something.