Plus, the air had an unnatural warmth to it rather than being frigid from being trapped in the frozen pond. As they traveled deeper into the giant's cave, Gabby wondered where they were on the school grounds. She'd grown up with the eye-screen technology all her life and had played plenty of alternate reality games, but never before had one been so immersive. Normally, the games painted over the objects that were already there. This one had painted over the whole world so she couldn't actually see what was there. Gabby had the sudden feeling that she was about to run into a wall and had to steel herself to take the next step. When she didn't, she let out her breath and remembered that running into a wall was the least of her worries here. Now she understood how they had hidden the wall in the mountains and Mr. Johnson had appeared out of thin air. If they painted a new world over her eye-screens, one mostly the same as the one she expected, then they could hide anything they wanted within the rest.
