Absolutely love this game. I disagree with others who want to be able to see your progress as you're typing the runes; the interesting part of the challenge for me was trying to remember where I was after I entered each one. Makes for an interesting challenge. Maybe you could have multiple difficulty levels - a beginner one where you can see your progress as you type and a more difficult one where you can't. I wouldn't change a thing about it; just add more runes and make it longer!