When the game begins, a path is made which often loops back upon itself and leads up to your ship which is in the center of the map and is the main thing you are protecting. The mobs will follow this path until they reach the center. Each wave of monsters consists of ever-increasingly powerful World of Warcraft creatures starting from boars and moving all the way up to Deathwing.
The gameplay is simple. Place towers in locations likely to do the most damage against the waves of mobs and protect your ship. You get minerals from each kill which allow you to build more towers. There are also mandatory minigames interspersed between waves in which you can gain more minerals.
WoW TD 2
is a fun, simple tower defense game, but it's not very pretty, the instructions are obviously from someone for whom English is not the first language, and the minigames are a bit annoying. When I say it's not very pretty, I mean it is set in a place that looks like old school Desolace and the ship you are protecting is just a small ship in a puddle. But regardless of its drawbacks, it is a pleasant diversion for a handful of playthroughs.