

Group all your Bile Launchers on a hotkey and aim the biles slightly ahead of where you expect the enemy to be.

However, they often fail to deal with an entire wave cleanly, even with the use of a few Spine/Spore Crawlers, and hence they should be supported by some units if possible, especially Zagara the hero. Bile Launchers are good at dealing with periodic, concentrated attack waves that arrive from predictable directions, especially in Temple of the Past, Mist Opportunities and Oblivion Express.Also, if Sustained Frenzy is used right after the Roach Drop spell, the Roaches will be able to output a significant amount of damage. Even without vision, you can use it in an area with a high density of enemy units, allowing the spell to deal a lot of AoE damage, especially so with points in the Roach Drop mastery, as well as applying a short stun, before your Zerglings and Banelings rush in to support the attack. Roach Drop should be saved for when you plan to assault a heavily-fortified base, but plan around using it as often as possible - it has a short cooldown of 3 minutes, so use it early and often.This allows her army to have an easier time engaging later on.


Free Banelings have significantly better damage output later on, once the Corrosive Acid ability has been researched. Until then, focus on getting your economy up, upgrading, and banking up on Banelings. For most missions, you should rely solely on Zagara the Hero unit until around eight minutes into the game.
