Robo Wind Construct (RWC) is a standalone game demo for OpenMW that doesn’t use any proprietary assets. It truly shows what can be possible with the OpenMW engine aside from reimplementing Gamebryo games.

https://modding-openmw.com/mods/rwc-robowind/

Following the RWC project in OpenMW discord has been interesting. There’s symbiosis between development, where RWC might need a feature that ends up ported to OpenMW and becomes available to everyone! I hope they’re able to eventually complete the game.