Aartha seems to have been found by one user at the assembler forum:agartha dreamcast | ASSEMbler - Home of the obscure. uts very early but its running and interactive.Its nice to see how cool it would have been.Dreamcast junk yard talks more about it The Dreamcast Junkyard: Playable Demo Of Cancelled Dreamcast Game Agartha Discovered

[youtube]https://youtu.be/icL_lA3JKmI[/youtube]