Adventure Creator is a revelation. It allows to create highly customizable state-of-the-art adventure games without any programming skills! I started using it with only little knowledge of unity and programming in general and I was able to build and finish a little game within days - only using the comprehensive manual and the official forum. When posting questions in the forum, Chris, the creator of Adventure Creator, is always ready to help and gives good advice very fast.
Verdict: I really love Adventure Creator, best spent money ever. It was kinda life-changing for me because instead of searching for programmers, I can finally easily build adventure games myself. A clear 10 points out of 5 :)