Call it "life experience" and we are getting close. Most of the teenagers I know of are smarter and wiser than the adults around me. But that's just my subjective view point.
It becomes rather difficult to pin point, expecially if people try to nit pick all the time.

I don't know why people are saying that "no teenager" has to be allowed to enjoy a game to fit my "demands"

Let's take "Papers, Please". A teenager enjoying it shows some peculiar level of maturity, not saying if that is good or bad but that's what I would say.

Here I thought that it might be a great topic for general recomendations of mature games, but it turns out that the op has his own, quite 'unique' definition of what mature is (apparently, the Witcher games arent, what a bummer - I guess I was wrong).

Honestly, I don't know what could seriously be recommended to you. Basicly every game could be excluded from the 'category' of mature by employing such strict guidelines for it.

No offence, just expressing my opinion.

edit:
Also, I don't get it why does the fact that a game may appeal to some teens (Witcher games) automatically crosses out the possibility of it being a mature one.

Every valuable piece of art conveys a message on so many dimensions that every person may get something else out of it (or something more every next time they experience this work <read / watch / play it again>), thus making it possible that it appeals to different kinds of people in different ways.

That are pretty good example you give, if you find games that cater the themes you mention please let me know!

I don't what you want to contribute here, but I'm all ears for constructive criticism and please be so kind to show where I mentioned that something gets "disqualified" because a teenager plays such games. I honestly believe I never said a thing like that.

HEYY!!! I actually liked Trauma. :-p

When I say wisdom, I mean life experience. That is why a lot of people think senior citizens are wise because they have lived for a long time but a lot of them, have not truly "lived" in my opinion, so it is very possible that a person in their 20s can have more life experience than a senior citizen. Age does not = life experience, all the time.

List of games that require life experience to fully enjoy...

I can't come up with anything... :( I can give you a list of movies(Apocalypse Now, one of them), easily but games? No.

Your question "Do they exist?" is a good question.

I never wanted to say that, I'm not even sure I even said that, somewhere.
Basically what I meant is that some teenagers playing such games have a different level of maturity. You can't "ban" teenagers from playing games for adults. That's utterly ridiculous. Who would want that, anyway. I'm actually in favor of removing the censorship, PEGI USK ratings etc. I'm not an advocate of an elitist maturity club where you have to show your id to prove that your are old enough. That's bullshit.

I understood what you meant by "mature" right away.

I think the place to start would be with Interactive Fiction, as the emphasis is usually on depth of story, underlying motives, agendas, political intrigue, and more complicated subject matter that younger audiences would have either a more difficult time understanding to the fullest degree, or as a generalization, would find "boring".

The next place I would adventure in (pun intended), would be Point and Click adventure games. Since, by nature, they tend to be focused more on story and intellect (figuring out puzzles) than say, twitch platformers or Hand-Eye coordination games (like shooters). There is a wide mixture of age levels in most of those games, so you will find everything from immature to mature, logical to outlandish, difficult to easy.

Depth of subject matter, exploration of adult life, and the like will probably give more of what you're looking for. I recently found a comparison in some book series I've been reading....

I finished reading the 5th book in Robert Jordan's "Wheel of time" series. I decided to take a break and started reading the Riftwar Saga, by Raymond E. Feist. Both series I read when I was in 5th grade... But, there's a huge difference in the two series:

The Robert Jordan books have more underlying things going on and have subsurface things I didn't understand or catch when I was younger. This vast level of depth brings me to view them as more "mature" in the same way as you talk about. In comparison, the Feist books don't have the same depth. I don't feel I missed any understanding as a kid. Mind you- BOTH were/are very enjoyable to me when I was a kid, and now as an adult... but there's a different level of content in them. Coming at the Robert Jordan books as an adult, I have a "fullness of understanding" I didn't have when reading it as a kid. That's what I think you're looking for as "mature"- simply a game that will more likely grant a higher level of depth and fullness of understanding that normally comes with age and life experiences, and is tailored to that style of understanding.

Needing 64 entries before someone realizing this lets me seriously questioning my writing skills...

Hello, this is a nice topic but most of the games named here are as well in the other topic about clever stories, i see.

Well, here are my picks, with my chosen definition of "Mature" being games delivering these kind of feelings of linked responsible freedom and consequences to the player, human growth, also some treating of the reality of sorrow, death and abuses.

Analogue a Hate Story, Breath of Fire IV (really liked the "villain" Fou-Lu), Home, the Path, most of David Cage games : Farhenheit, Heavy Rain and less so Nomad Soul, Valkyrie Profile, Syberia. the Walking Dead, Silent Hill 1 & 2.

I wish there were more i could recommend but i did not play many enough, damn collector OCD..

I did, too (with the exception of the girl's voice-acting).

Play sandbox games. Or games that let you to roam free and do whatever you like. There are not that much adult games out there. And Torment is not an adult game at all. It has story depth and a couple of different ways to play it.

You can try those new horror themed games. Which give you a few or no items and throws you in their game world and expect you to not to have an heart attack. =) They go for atmosphere and lots of nasty surprises. I dunno if that fits the definition "adult" but worth a shot. =)