When you download it to the N8x0 go into XTerm, become root however you choose to do so. (see http://wiki.maemo.org/Root_access if you do not already know how to do this...) most everything below has to be done in XTerm as root. (well, actually now that I think about it, it probably can be done as user, but in case there is something that cant, do it as root...)

First get to the root of the filesystem:
(cd /)

Then when at root, copy the .tar.gz from where ever you downloaded it to / by using the copy command:
(cp /home/user/MyDocs/.documents/tmw-0.0.28.1-ARMEL.tar.gz / )

Then uncompress it using:
( tar -xzvf tmw-0.0.28.1-ARMEL.tar.gz )

This will install everything where it belongs. (well it should anyway...)

Then you can download the most recent tmw binary from my 1st post or the one a couple posts up and copy it over the original using:
(cp /home/user/MyDocs/.documents/tmw /home/user/)

You may also have to set the permissions on this file to make it run:
(chmod +x /home/user/tmw)

Now you should (SHOULD) have an icon (though a broken one) in extras called The Mana World and you can click on it to start the game.

If you already knew a bunch of this I apologize, but I thought there might be some out there that didn't know it. (but were afraid to ask..)

I will make a Deb file as soon as I either fix sound or give up on fixing it.

-John