I 'm not saying this because I 'm a forum member, it's actually what I believe: AM is so far one of the best tools to create your own first person adventures. I totally adore it, it can create very good comercial games and there are many unexplored areas of it. I 'm working on some real-time action at the moment, but I 've been going slowly with it, I don't know when it is going to be finalized to let you see how it works...
Anyway, using AM, a little (or a lot
) VBS knowledge, some plugins and your creativity you can work wonders. You can use supportive programs such as 3d programs and image editing ones.
Compared to Game maker or adventure game studio, AM has a lot of advantages. I 've been searching the market and I prefered this one for a lot of reasons (one of them is this supportive community, which has helped me and continues helping me all the time)
Whatever you decide, you will sooner or later see that AM is an easy tool to create wonderful games.