Jump off the tower
From Create Your Own Story
Gathering your courage, you jump off the tower and fall into a white oblivion. But, rings of colors explode some distance away. What is happening? you think. You land, and a ring of purple goes out from beneath your feet. You don't at all feel damaged.
Chapter 2: A World Away
You look around you. It feels... strange. Almost foreign. Yet you know it isn't. It can't be. You've been here now for who-knows-how-long, and now... the glass wall prevents you from leaving.
At least, you assume it's a wall. Either that or a force field. But beyond it, you can see grass, trees, houses, happy, smiling families. It's just normal. Home, almost. It's just... well, a world away.