I've been hoping for a remaster of this to be released for a long time, watching
https://github.com/hankmorgan/UnderworldGodot for progress. Then suddenly I saw this! Looks like a fully functional remake of UU in Unity. I'll admit, I don't love the art style of the 3D models compared to the original sprites, but I can live with that if it makes the game easier/more modern to play.