What you get here is essentially a board game built from scratch as a PC strategy experience. It's too complex and animation heavy to work as a real board title you'd pick up as a hobby store, but it works great as an online title. The clear Redwall / Mouse Guard flavor doesn't hurt either!
Combining several different styles all at once, Armello is part turn-based strategy, part card-based random mechanics, and part RPG. Although it has a single-player campaign and AI missions, keep in mind Armello is very much meant to be played online against other players.