Orcs are gross. Dwarfs are just weird. Do we have to pick a winner in this battle? Can we just root for both sides to lose? What would it take to get some elves or some humans up in here? Fine, we'll play by your rules, DvO.
In what is surely the first orc and dwarf based game ever to not be an RPG, Dwarfs vs. Orcs plays like a mix between tower defense and realtime strategy. Think Plants vs. Zombies in a medieval setting.