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I found it odd that during the campaign, I am unable to use the Queen's ability to spawn larva. However, it seemed that keeping a queen near my hatchery did cause more larva to spawn.

In the Heart of the Swarm campaign, does keeping a queen near a hatchery affect the amount of larva produced?

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marked as duplicate by Sorean, Sadly Not, KatieK, kalina, Shadur Apr 12 '13 at 21:18

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

Related How do I manage Larvae in the Campaign maps? – Sorean Apr 12 '13 at 16:38
up vote 3 down vote accepted

Queens near hatcheries don't cause larvae to spawn, but the difficulty level on the campaign does affect the amount of larvae produced.

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