Like strategy games, but don't want to deal with all the complex mechanisms present in 4X games or battle non-stop "Zerg rushes" in RTS? If so, you might actually like this game.
It's basically the classic game RISK, but the "Factions" version involves playing one of five different groups: humans, robots, cats, yetis and the undead. The only differences are visual (i.e. no faction-based special attacks or anything), but it adds a lively -- and often quite amusing -- flourish to what some consider a boring game. The classic version is available, as well.
The single player campaign is rather short, although the AI is cheap. You can beat it eventually, but doing so relies more on luck than anything else. Multiplayer is online or hot-seat.
All in all, it's an inexpensive strategy game that's easy to learn and visually more entertaining and accessible for those not normally inclined toward this genre.