Cool game! Without any vision - impossible.
Or is it? ;)
What?!
I mean, sure, it could take very long to memorize the levels, but collision and rooms still work, and of course I had to test it to see if it's possible. Keep in mind, though, game designers know their games like the back of their hand.
Yeah, I can confirm that with my game - what I felt easy actually wasn't for others!
Did you checked out Johnny Split by the way?