How can I play VAST 2.0 xml content on a website

I have VAST 2.0 code from AppNext that contains video ads. I would like to play it / integrate it with my website, but they don't provide any information about that, no players, no libraries, no nothing. I must be missing something obvious. How can I play it? The sample code is below:

<VAST version="3.0">
<Ad id="100880">
<InLine>
<AdSystem version="1.0">Appnext VAST</AdSystem>
<AdTitle>Knights & Dragons</AdTitle>
<Impression>
http://ift.tt/2lMhhQA
</Impression>
<Description>
Knights & Dragons is a non-stop action role playing game.
</Description>
<Pricing>"cpi,","USD","2.98"</Pricing>
<Error>
http://ift.tt/2lS7KTU
</Error>
<Creatives>
<Creative id="100880">
<Linear>
<Duration>00:00:30.000</Duration>
<VideoClicks>
<ClickThrough>
<![CDATA[
http://ift.tt/2lMhXFt
]]>
</ClickThrough>
</VideoClicks>
<TrackingEvents>
<Tracking event="start">
<![CDATA[
http://ift.tt/2lRZnIj
]]>
</Tracking>
<Tracking event="complete">
<![CDATA[
http://ift.tt/2lMkWOc
]]>
</Tracking>
</TrackingEvents>
<MediaFiles>
<MediaFile delivery="progressive" type="video/mp4" width="640" height="360" bitrate="500" scalable="true" maintainAspectRatio="true">
<![CDATA[
http://ift.tt/2lRQT3Y
]]>
</MediaFile>
<MediaFile delivery="progressive" type="video/mp4" width="320" height="180" bitrate="500" scalable="true" maintainAspectRatio="true">
<![CDATA[
http://ift.tt/2lMp80t
]]>
</MediaFile>
</MediaFiles>
</Linear>
</Creative>
<Creative id="100880_companion" adId="100880">
<CompanionAds required="none">
<Companion id="app_icon" width="512" height="512">
<StaticResource creativeType="image/png">
<![CDATA[
http://ift.tt/2lRTiLF
]]>
</StaticResource>
<CompanionClickThrough>
<![CDATA[
http://ift.tt/2lMhXFt
]]>
</CompanionClickThrough>
</Companion>
<Companion id="app_title" width="0" height="0">
<HTMLResource>
<![CDATA[ Knights & Dragons ]]>
</HTMLResource>
<CompanionClickThrough>
http://ift.tt/2lMhXFt
</CompanionClickThrough>
</Companion>
<Companion id="app_description" width="0" height="0">
<HTMLResource>
<![CDATA[
Knights & Dragons is a non-stop action role playing game.
]]>
</HTMLResource>
<CompanionClickThrough>
http://ift.tt/2lMhXFt
</CompanionClickThrough>
</Companion>
<Companion id="app_wide_image" width="1200" height="628">
<StaticResource creativeType="image/png">
<![CDATA[
http://ift.tt/2lMoJeB
]]>
</StaticResource>
<CompanionClickThrough>
<![CDATA[
http://ift.tt/2lMhXFt
]]>
</CompanionClickThrough>

</Companion>
<Companion id="app_rating" width="0" height="0">
<HTMLResource>
<![CDATA[ 4.4 ]]>
</HTMLResource>
<CompanionClickThrough>
<![CDATA[
http://ift.tt/2lMhXFt
]]>
</CompanionClickThrough>
</Companion>
<Companion id="app_number_of_downloads" width="0" height="0">
<HTMLResource>
<![CDATA[ 10000000+ ]]>
</HTMLResource>
<CompanionClickThrough>
<![CDATA[
http://ift.tt/2lMhXFt
]]>
</CompanionClickThrough>
</Companion>
<Companion id="install_button_title" width="0" height="0">
<HTMLResource>Install</HTMLResource>
<CompanionClickThrough>
<![CDATA[
http://ift.tt/2lMhXFt
]]>
</CompanionClickThrough>
</Companion>
</CompanionAds>
</Creative>
</Creatives>
</InLine>
</Ad>
</VAST>