imaginary world:

I think that's opening many possibilities, from going trivially "all fantasy" to "no graphics", and that's just if we talk about visuals. possibilities are endless.

secretly educated:

I always like that about books, when they tell you a little story and by the end you actually understand something on a bigger scope. But it would be also fun if you get to know something about a language, music, physics, ethnicity, geography etc. without realizing cause you had fun gaming.

new genre:

I'd like to fully stretch your brain muscles...oh sh... I got to do this too.