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>
    <links gplcontinue="1|0|Casino_Aztar" />
  </query-continue>
  <query>
    <pages>
      <page pageid="3365" ns="0" title="10x Play" touched="2013-03-24T17:18:56Z" lastrevid="3398" counter="" length="629" new="" />
      <page pageid="4880" ns="0" title="A C Internacional Automat Club - Arcade Casino" touched="2013-04-04T12:52:42Z" lastrevid="4935" counter="" length="1441" new="" />
      <page pageid="4229" ns="0" title="Amon Ra" touched="2013-03-24T22:41:29Z" lastrevid="4262" counter="" length="597" new="" />
      <page pageid="3730" ns="0" title="Bars &amp; Bells" touched="2013-03-24T21:51:22Z" lastrevid="3763" counter="" length="719" new="" />
      <page pageid="1525" ns="0" title="BestCasino" touched="2013-01-16T08:12:41Z" lastrevid="1538" counter="" length="887" new="" />
      <page pageid="1528" ns="0" title="Bet Voyager Casino" touched="2013-01-16T08:12:41Z" lastrevid="1541" counter="" length="1063" new="" />
      <page pageid="6687" ns="0" title="Blue Chip Casino" touched="2013-04-04T17:57:34Z" lastrevid="6831" counter="" length="795" new="" />
      <page pageid="3039" ns="0" title="Blue Lagoon" touched="2013-03-24T14:13:23Z" lastrevid="3071" counter="" length="711" new="" />
      <page pageid="6472" ns="0" title="Bruce&#039;s Bar and Casino" touched="2013-04-04T16:12:41Z" lastrevid="6611" counter="" length="920" new="" />
      <page pageid="1557" ns="0" title="Carnival Casino" touched="2013-01-16T08:12:56Z" lastrevid="1570" counter="" length="1712" new="" />
    </pages>
  </query>
</api>