Les fleuves de l'enfer (2007)

From the Game's Introduction:

Les personnages de ce jeu de rôles sont restés longtemps entre la vie et la mort. Leur âme a traversé des fleuves de l'enfer et s'est imprégnée de leurs eaux. Revenus au monde des vivants, ils gardent en eux des pouvoirs infernaux. Ces revenants s'apercevront que la frontière de l'au-delà est très poreuse, et que leurs semblables sont nombreux, et souvent animés d'intentions nuisibles...

User Translation from French:

The characters in this role-playing game have remained between life and death for some time. Their soul has crossed the rivers of hell and is infused with their waters. Returning to the world of the living, they harbour in themselves infernal powers. These spirits will realise that the border of the afterlife is very permeable, and that their like are numerous, and often motivated by harmful intentions...

An entry for the Casus NO forum RPG contest of January 2007 which had the theme of "Frontiers".