3D animation with sound in 64 bytes of assembler
Since this only uses PC hardware and BIOS calls and so doesn't depend on DOS, I turned it into a boot sector which runs in qemu:<p><pre><code>    wget http://oirase.annexia.org/war
    qemu-system-i386 -hda war
</code></pre>
Modified source is here: <a href="http://oirase.annexia.org/war.S" rel="nofollow">http://oirase.annexia.org/war.S</a>