From the description:
At the dawn of time, a deity forged you from their soul, their essence, their power. That power wanes. Inheritors have claimed you, taking your power for their own. Once, you made them gods. Then, you made them kings. Now, you make them human.
In 'I Was Once', you play as an Heirloom, a vessel of divine power. In Act 1, tell the story of the gods who claimed you and the strength you gave them. In Act 2, tell the story of the mortals who wielded you and how you made them more. In Act 3, tell a quiet tale of humans and stillness. The stories no one else will care about.
Content Warning: This game contains themes of mortality and abandonment. Use your judgement while playing and remember to take breaks.