He did walk me through the app quickly, but since it's a free download over on their website, you can go see it for yourself if you want. The idea is that you set up a series of "actors," and then you add a set of rules for those actors (what happens when they touch or get directions from the keyboard, etc.) that will eventually make up a full game. GameSalad doesn't actually require any coding knowledge, but Herring told me that it did require a little bit of know-how in terms of how games work. You can easily make a game system with the app (and even veteran developers often use it for quick prototyping), but to actually make a working game that people will want to play, you'll have to bring your own trial-and-error patience and balancing effort.