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>
    <pages>
      <page pageid="730" ns="0" title="Boss Tricks" contentmodel="wikitext" pagelanguage="en" touched="2005-05-04T23:51:37Z" lastrevid="3124" counter="98642" length="282" />
      <page pageid="807" ns="0" title="Game Breaker Glitches" contentmodel="wikitext" pagelanguage="en" touched="2008-04-23T16:46:40Z" lastrevid="5281" counter="85509" length="1086" />
      <page pageid="902" ns="0" title="Multiplayer Tricks" contentmodel="wikitext" pagelanguage="en" touched="2005-06-06T20:09:27Z" lastrevid="3296" counter="44351" length="794" />
      <page pageid="744" ns="0" title="Other" contentmodel="wikitext" pagelanguage="en" touched="2008-03-31T15:23:57Z" lastrevid="5275" counter="333706" length="1953" />
      <page pageid="731" ns="0" title="Sequence Breaking" contentmodel="wikitext" pagelanguage="en" touched="2007-05-26T21:04:23Z" lastrevid="5229" counter="146182" length="752" />
      <page pageid="728" ns="0" title="Speed Tricks" contentmodel="wikitext" pagelanguage="en" touched="2007-05-30T17:50:04Z" lastrevid="5251" counter="150230" length="1567" />
      <page pageid="765" ns="0" title="Super Quick Start Guide" contentmodel="wikitext" pagelanguage="en" touched="2004-12-08T02:04:42Z" lastrevid="3159" counter="32518" length="2215" />
      <page pageid="729" ns="0" title="Techniques" contentmodel="wikitext" pagelanguage="en" touched="2007-05-26T23:04:22Z" lastrevid="5241" counter="132482" length="993" />
      <page pageid="732" ns="0" title="Version Differences" contentmodel="wikitext" pagelanguage="en" touched="2006-06-13T07:27:21Z" lastrevid="3126" counter="69248" length="1416" />
    </pages>
  </query>
</api>