Shadow Tactics, in the most basic terms, is a Commandos inspired strategy game that's all about sneaking around, taking out enemies with carefully concocted plans, and then desperately trying to fix the resulting mess once those plans inevitably fail.
And since that description doesn't really do it justice, allow me to show you a rather lengthy gameplay video featuring the very first level from Shadow Tactics. So if you're interested in seeing what Shadow Tactics is really all about, have a look:
On the other hand, if you're interested in my thoughts and a detailed review of Shadow Tactics, you can find it by heading over here. I hope you enjoyed the video!