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="Drip_Casino_65u" />
  </query-continue>
  <query>
    <allpages>
      <p pageid="167" ns="0" title="Bang Casino 42N" />
      <p pageid="165" ns="0" title="Bang Casino 70n" />
      <p pageid="161" ns="0" title="Bons Casino" />
      <p pageid="68" ns="0" title="Cat Casino 1F" />
      <p pageid="80" ns="0" title="Cat Casino 3v" />
      <p pageid="72" ns="0" title="Cat Casino 56x" />
      <p pageid="70" ns="0" title="DBbet Online 3L" />
      <p pageid="76" ns="0" title="DBbet Online 89O" />
      <p pageid="107" ns="0" title="Dragon Money 78e" />
      <p pageid="66" ns="0" title="Drip Casino 43u" />
    </allpages>
  </query>
</api>