You are looking at the HTML representation of the XML format.
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.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <allimages gaicontinue="Titan-controlled.png" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1596" ns="6" title="File:Academy of Magical Research.jpg" />
      <page pageid="1397" ns="6" title="File:Arcane District.jpg" />
      <page pageid="1606" ns="6" title="File:Carn.jpg" />
      <page pageid="1582" ns="6" title="File:Dancing Dryad.jpg" />
      <page pageid="1603" ns="6" title="File:DragonCourtMap.jpg" />
      <page pageid="1626" ns="6" title="File:EA-RR.jpg" />
      <page pageid="1583" ns="6" title="File:Golden Griffon.jpg" />
      <page pageid="1383" ns="6" title="File:Logo titan.jpg" />
      <page pageid="1616" ns="6" title="File:Magic circle.png" />
      <page pageid="1384" ns="6" title="File:Map of Dragon Court.png" />
    </pages>
  </query>
</api>