So, about a year or two ago I played a game whose name was something along the lines of "X Battle", and it involved fighting a dark army made up of Orcs, Trolls and Goblins. The mechanics of the game were primarily hovering your mouse cursor over a building to upgrade it or build units, hovering the cursor over enemies to damage them, and hovering it over gold mines or trees to harvest gold or lumber. For the life of me, I can't remember the name of this game, and I can't seem to find it under the Strategy or Action games on here.
I don't believe it's either of those, I remember it distinctly having two or three campaign modes, and a survival mode. It wasn't tower defense either. It relied only on hovering a mouse cursor over enemies, resources or your own buildings. It may have been removed though, and I can't seem to find it anywhere else.