Use code TD-FRTW to get it even cheaper, for £4, code works once/account. Enjoy:)
Heart of the Swarm is the first expansion set to the epic sci-fi real-time strategy game, StarCraft II: Wings of Liberty
•Continues the epic story of StarCraft II from where Wings of Liberty left off.
•Approximately 20 new campaign missions.
•New campaign gameplay mechanics, allowing players to evolve new abilities and units for their zerg army.
•Go into battle with Kerrigan as she tries to restore her strength and regain control of the Swarm.
•New multiplayer units and maps, expanding strategic choice and gameplay depth for each race.
•Expanded features and functionality for Battle.net to improve custom-game search, and new tools for map authors to create even more epic custom games.
•New pre-rendered and in-game cinematics bring the story of Heart of the Swarm to life.