Try the new AI-powered Infinite Story.

Hall of Infinite Doors

You walk through the archway with the heading "Pigfarts Intergalactic School of Wizardry".
You walk down the hallway for awhile and then you enter a room with many other people, much like yourself, except, they are all wearing spacesuits.
As soon as you are completely in the room, the hallway behind you disappears.
"Why don't you have your spacesuit on? You can't go to Pigfarts, which is on mars, with out it!" states some kid, about your age, standing near you.