Adult PC Game: Tempest Prologue v1.1 by Lone Hermit Productions Archive

"For eons, a hidden war between fallen angels and banished demons has shaped human history. Growing weary of this endless conflict, a celestial goddess and an abyssal prince forged an impossible union in the un-space of the Void. What they got was The Three.
Now, centuries later, an exiled Sentinel Angel and his allies, a demon and a fallen angel, must protect the three human children who have become the vessels for these powerful, paradoxical souls. Their choices will determine the fate of both the mortal and supernatural realms. This is not a war of good versus evil, but a fight for free will itself."​