Okko is a two player game of samurai warriors based on the comic by the same name. Published as board game with paper figures, the game was originally intended to be played with pewter miniatures. YIU (who did such an excellent job with the Alkemy jungle board) created a set of terrain features to support the 3D aspect of the game.
The French language Okko forums contain two WIP threads: tower and compound. Additional notes in English at the Wyrd forum. Check out the Fortin and Okko galleries on Photobucket or the unofficial Okko blog.