The story of Agartha is an interesting one, and up until now it was thought that the game never actually got past the concept stage, with various rumours swirling around the internet that the images released to the press back in the day weren't actually from a build of the game running on genuine Dreamcast hardware. Happily, we can now report that yes, there is a playable version of No Cliché's long-lost snow-bound adventure out there.
The game was to be No Cliché's second major foray into the Dreamcast library after Toy Commander, and is set in 1920s Romania. The main theme is supernatural in design, and the search for the entrance to the mysterious titular city of Agartha is a key plot thread. The video gives a glimpse at the interactions players could expect with card-playing villagers, a look at the menu screens and items, and some of the snow-covered outdoor areas. There's also a (fairly gruesome) demonstration of the real-time lighting used in the engine. Sadly, the promising title was cancelled and promptly vanished after Sega announced discontinuation of the Dreamcast.
Naturally, the Agartha shown in the video is very early, but the fact that a playable version exists is pretty incredible. The footage here (and the image below) is taken from an emulator, but the GD does run in a Dreamcast too according to the owner. It's slightly annoying that all we're allowed to see is this video (but hell - it's better than nothing!), and we're hopeful that at some point the owner will release it for everyone to have a good look at.
In the meantime, why not check out this previous article exploring Agartha's cameo in Toy Racer?