Some people mention The Witcher on the same level as some classics like Baldurs Gate 2, Morrowind, Knight of the old Republic etc. In my view this game could be it, but the gameplay is not good enough. But step by step:
The world is on perfect level: The NPCs got a lot of life, there are many details to discover, the political background is detailed and complex. In addition you have very good music. The dialogs are on top level also: adult, happy, direct. One of the best, I could read since a long time. The story is well written and well presented. Not a big epos, but on a very good level. If you didnt have enough of this game, you can download a lot of mods. I played with a texture mod, that enhanced the graphic from 2011.

The problem: the gameplay and that means, the core of every game: In the beginning I was excited about it, but it changed fastly. The fighting with the sword is mostly a reaction game, greetings from arcade games. In addition the controling is very bad, sometimes Gerald simply didnt do the commands, because the game played the animations to the end. There are some other gameplay elements, that are annoying. Yes, the inventar is still too small.

Result: Surely a very good game, but not top