I really didn't know what to expect when I saw The Witcher. To be honest I thought it was going to be a mod or total conversion of Neverwinter Nights. I couldn't have been more wrong though as it's really a solid stand-alone RPG. Graphics are good, tons of gameplay is included and they really pushed the Aurora engine to its limits and beyond by rewriting it to use DX9. I didn't actually play it myself so I can't really go too deep into it, but from what they were demoing (live game action) it looked very promising.