It's simple, but challenging and fun. Fast enough to learn but not too easy, and most missions are not too long or too short, overall making it an excellent game if you don't have a lot of time each day to play. I wouldn't call it exactly "casual", anyway. Also, I don't agree with other reviews: it's indeed necessary to move around all the time, looking for cover or going into hiding in order to regenerate shields. There's not a lot of weapon variety, but it doesn't seem to me that sniper rifles are always the best option (though I haven't finished it yet). It's certainly not the most tactically challenging game around, but I don't think it was intended to. The gameplay reminds me a little of Space Crusade and Heroquest boardgames. It's got a certain feel that I really enjoy. It's not without its faults (the inventory system is a little clumsy at first, tutorial could explain some issues better*) but it's well worth your time and money. * For example, when you choose the team members to deploy just before a mission (once you know if there's a mandatory member for that mission), you can still buy and change equipment between them. In fact, this is the fastest and easiest way to do it, as you already know who is going with you.
