Nice idea, the start was a little bumpy though because it wasn't really clear what I was supposed to do (answer with the word answer xxx, answer 'xxx' or just xxx). For a non-programmer this would be a bit of a leap perhaps. The first puzzles didn't really feel at all connected to the rest of the game to me (questions about ineffable things).

It'd be nice if the program initially responded to more english words, to make the initial interaction more fun.

At one point I got stuck because '' was expected around a value but this wasn't obvious from the previous steps.

The use of @ before predefined variables doesn't really seem necessary.

Allowing users to add variables is a nice touch

Chrome sometimes took cmd-return to mean open a new browser tab, not sure why.