Osprey Game’s Of Gods and Mortals lets you play out mythical battles between various deities and their human followers. The first supplement for it, Celts, is now available from Ganesha Games, giving you yet more gods, monsters, and mortals with which to wage your wars.
From the release:
The 54-page book includes new gods, heroes, monsters and mortals, as well as expanded treatments of those covered in the game’s core rulebook. Chariots are covered in detail, including the chariot-feats described in Irish sagas such as the Tain Bo Cuailnge. New battle scenarios are provided, as well as notes on warband design and allied forces. Finally, a detailed bibliography is provided for readers who wish to explore the worlds of Celtic myth further.