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>
    <allimages aistart="2011-03-16T15:58:53Z" />
  </query-continue>
  <query>
    <allimages>
      <img name="Screen-Raids_09_en.jpg" timestamp="2011-03-16T17:13:52Z" user="Kramagon" url="http://owiki.battleworld.nl/images/7/76/Screen-Raids_09_en.jpg" descriptionurl="http://owiki.battleworld.nl/File:Screen-Raids_09_en.jpg" ns="6" title="File:Screen-Raids 09 en.jpg" />
      <img name="Screen-Trade_04_en.jpg" timestamp="2011-03-16T16:02:03Z" user="Kramagon" url="http://owiki.battleworld.nl/images/7/75/Screen-Trade_04_en.jpg" descriptionurl="http://owiki.battleworld.nl/File:Screen-Trade_04_en.jpg" ns="6" title="File:Screen-Trade 04 en.jpg" />
      <img name="Screen-Trade_03_en.jpg" timestamp="2011-03-16T16:01:55Z" user="Kramagon" url="http://owiki.battleworld.nl/images/d/db/Screen-Trade_03_en.jpg" descriptionurl="http://owiki.battleworld.nl/File:Screen-Trade_03_en.jpg" ns="6" title="File:Screen-Trade 03 en.jpg" />
      <img name="Screen-Trade_02_en.jpg" timestamp="2011-03-16T16:01:47Z" user="Kramagon" url="http://owiki.battleworld.nl/images/a/a8/Screen-Trade_02_en.jpg" descriptionurl="http://owiki.battleworld.nl/File:Screen-Trade_02_en.jpg" ns="6" title="File:Screen-Trade 02 en.jpg" />
      <img name="Screen-Trade_01_en.jpg" timestamp="2011-03-16T16:01:37Z" user="Kramagon" url="http://owiki.battleworld.nl/images/5/59/Screen-Trade_01_en.jpg" descriptionurl="http://owiki.battleworld.nl/File:Screen-Trade_01_en.jpg" ns="6" title="File:Screen-Trade 01 en.jpg" />
      <img name="Screen-Ships_02_en.jpg" timestamp="2011-03-16T16:01:23Z" user="Kramagon" url="http://owiki.battleworld.nl/images/1/1f/Screen-Ships_02_en.jpg" descriptionurl="http://owiki.battleworld.nl/File:Screen-Ships_02_en.jpg" ns="6" title="File:Screen-Ships 02 en.jpg" />
      <img name="Screen-Ships_01_en.jpg" timestamp="2011-03-16T16:01:15Z" user="Kramagon" url="http://owiki.battleworld.nl/images/7/73/Screen-Ships_01_en.jpg" descriptionurl="http://owiki.battleworld.nl/File:Screen-Ships_01_en.jpg" ns="6" title="File:Screen-Ships 01 en.jpg" />
      <img name="Screen-Saving_04_en.jpg" timestamp="2011-03-16T15:59:21Z" user="Kramagon" url="http://owiki.battleworld.nl/images/7/7a/Screen-Saving_04_en.jpg" descriptionurl="http://owiki.battleworld.nl/File:Screen-Saving_04_en.jpg" ns="6" title="File:Screen-Saving 04 en.jpg" />
      <img name="Screen-Saving_03_en.jpg" timestamp="2011-03-16T15:59:12Z" user="Kramagon" url="http://owiki.battleworld.nl/images/1/16/Screen-Saving_03_en.jpg" descriptionurl="http://owiki.battleworld.nl/File:Screen-Saving_03_en.jpg" ns="6" title="File:Screen-Saving 03 en.jpg" />
      <img name="Screen-Saving_02_en.jpg" timestamp="2011-03-16T15:59:00Z" user="Kramagon" url="http://owiki.battleworld.nl/images/2/23/Screen-Saving_02_en.jpg" descriptionurl="http://owiki.battleworld.nl/File:Screen-Saving_02_en.jpg" ns="6" title="File:Screen-Saving 02 en.jpg" />
    </allimages>
  </query>
</api>