Now that I've a BYOND Membership, I've uploaded the Zoids Battle! host files for download. Note that this is not an update to the game itself, but it allows people who see the game and wish to play it as it was to do so.
I don't plan to do any updates at this time, aside from a possible skin addition to it. This may change depending on if the game regains popularity.
I've also set this as the download link for the HUB Entry, but it did not work when I tried it; possibly because the hub needs a moment or so.