First off, to play this game you need a code. You are supposed to get the code via a sticker on the game jewel box. Mine came without the code, and in searching for one I found this is quite common. It took a couple of days emailing the company to get one. The website for the game itself is down, so no help there. It seems permanently down; not trouble-with-server down.
I got through the first chapter with no trouble. The human aspects of the game are clunky, but the other visuals are good. In chapter two, there was some sort of bug and my game skipped all kinds of important stuff. In Agon, you can't go back. What's lost is lost. Thus, I had to start the whole thing over again and that time things worked as they should have.
In chapter three, to get key information and move on in the game, you go through this ridiculous search of a place in the forest, but there are no visual keys or clues as to how to get there. An internet walkthrough search indicates you are supposed to follow some specific sounds (louder=closer), but there are two problems with this. One, you only get to hear the sound you are supposed to follow for about 2 seconds before it's gone and you're on your own. Two, on my Mac anyway (and it's new, by the way, with the right software and bells and whistles), the sound never varies in strength. I tried it with headphones, without, adjusted the game sound, adjusted my Mac sound, etc. Nothing worked. I gave up. I can't even find any cheats on line! You should spare yourself the frustration of getting as far as I did and not being able to go further. There's apparently no way to get around needing the info. from this one area in the game, and no way to get there. A wasted 30 bucks.