You don’t really need sources, it’s just a bad game from every perspective made by a studio that only had experience with point and click adventures (which had an actual good reputation, but I’ve never played them myself). It looks ugly (as in: games ten years ago had better graphics), it plays badly and the amount of people who want to play as Gollum just isn’t that high.

It’s a fine game. They manage to nail the Cyberpunk atmosphere, but the story is kinda a mess because they set a time limit (it isn’t enforced, but it’s mentioned every second dialogue) while allowing you to goof of in any direction. Most of the bugs are ironed out, but the city still feels rather lifeless/bland once you try to look behind the façade.