14 DAY TRIAL // Video game developer Blizzard has announced some new information about the Heart of the Swarm expansion for its real time strategy game Starcraft II, confirming that it will have a single player campaign which includes 20 missions and talking about some new units and maps.
The new campaign will be focused on Sarah Kerrigan, one of the most intriguing characters of the universe, and for the first time ever in the series players will be able to use experience points in order to evolve her abilities much like the heroes were developed in Warcraft III.
The evolution system will be limited to the single player campaign of the game but Blizzard says that gamers will have a chance to get a deeper experience by using it.
The Zerg, as a sort of biological Borg who tend to integrate the best abilities of the races they consume, are well suited for an evolution system and much of the success of the Starcraft II expansion might be linked to the depth of this system.
New units include the Viper air unit for the Zerg faction, which has three unique abilities, and the Swarm Host, which can be burrowed in order to spawn a continuous stream of Locusts, sort of a like a siege engine.
Blizzard has also said that some units will be removed from the rosters of factions with Heart of the Swarm, with the Zerg players already set to lose the Overseer, the role of which will be taken over by the Viper.
Heart of the Swarm will have the same basic structure as Wings of Liberty and will see a cast of other characters working with or against Kerrigan in her new quest to dominate the Zerg.
The new content does not yet have an official launch date but will probably be out during the summer of 2012 on the PC.