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HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
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<?xml version="1.0"?>
<api>
  <query-continue>
    <allpages gapcontinue="Taco" />
  </query-continue>
  <query>
    <pages>
      <page pageid="17" ns="0" title="Retrieval">
        <revisions>
          <rev contentformat="text/x-wiki" contentmodel="wikitext" xml:space="preserve">[[Category:Modes]]
Capture the flag</rev>
        </revisions>
      </page>
      <page pageid="24" ns="0" title="Spawn Rooms">
        <revisions>
          <rev contentformat="text/x-wiki" contentmodel="wikitext" xml:space="preserve">Full of 24 Ranger look alikes, this is the room where the players spawn. If the player stays still, it is impossible to tell them apart from one of these regular cubes.

Spawn rooms are used to balance play by preventing spawn camping.</rev>
        </revisions>
      </page>
    </pages>
  </query>
</api>