Check out the retro-styled Flash game Bill the Demon:
History is filled with legends of Demons: evil creatures with dark powers and horrifying strength. There is Astaroth, who turns invisible; Beelzebub, master of flies and all Earthly diseases; Mephistopheles, Prince of Deceit; Asmodeus, Lord of Corruption; and Leviathan, great monster of the Deep. You are Bill.
