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>
    <allpages apcontinue="Dåsetårn-byggeriet" />
  </query-continue>
  <query>
    <allpages>
      <p pageid="36" ns="0" title="DHgame" />
      <p pageid="43" ns="0" title="Deltager liste" />
      <p pageid="17" ns="0" title="Deltager liste DHW14" />
      <p pageid="32" ns="0" title="Deltager liste DHW15" />
      <p pageid="39" ns="0" title="Deltager liste DHW16" />
      <p pageid="41" ns="0" title="Deltager liste DHW17" />
      <p pageid="38" ns="0" title="Dreamhack Billetkøb" />
      <p pageid="34" ns="0" title="Dreamhack Links" />
      <p pageid="9" ns="0" title="Dreamhack events" />
      <p pageid="7" ns="0" title="Dreamhack regler" />
    </allpages>
  </query>
</api>