Versu was one such attempt, with an engine designed by the Sims 3 AI developer: https://versu.com/about/ https://versu.com/about/ Though I'd guess that's more

Versu was one such attempt, with an engine designed by the Sims 3 AI developer: https://versu.com/about/ https://versu.com/about/ Though I'd guess that's more of a sophisticated GOFAI than RNNs.