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="Cryptoboss_Casino_83s" />
  </query-continue>
  <query>
    <allpages>
      <p pageid="83" ns="0" title="Big Bass" />
      <p pageid="1234" ns="0" title="Boost Business With A Well-Crafted Website Today" />
      <p pageid="1244" ns="0" title="CVs Oxford University Careers Service" />
      <p pageid="976" ns="0" title="Cat Casino 33r" />
      <p pageid="972" ns="0" title="Cat Casino 49y" />
      <p pageid="968" ns="0" title="Cat Casino 63N" />
      <p pageid="962" ns="0" title="Cat Casino 66z" />
      <p pageid="956" ns="0" title="Cat Casino 71W" />
      <p pageid="1026" ns="0" title="Cryptoboss Casino 42Z" />
      <p pageid="1024" ns="0" title="Cryptoboss Casino 51l" />
    </allpages>
  </query>
</api>