Nothing to watch?

>>305023
do you have a list of what you watched? Make a list on myanimelist since you're bored and come back for recommendations, you said you feel like you watched everything so there's no way to know what to recommend

cross ange / valvrave / gundam ibo
senseless mecha fun

>>305023
watch airing anime?

Maybe don't watch anime.

>>305023
Kaiji is pretty mature and plot-focused. I lost the ability to marathon shows years ago because they usually just aren't that interesting for more than a few episodes, but with Kaiji I was able to watch 18 episodes straight, so try that.

>>305023
If you want "mature" anumae:
- Death Parade
- Durarara! (Beck'ish)
- Eden of the East
- Mushishi
- Zankyou no Terror
- Monogatari Series (sorta intellectual at least)
- Gosick
- Kamisama No Inai Nichiyoubi (God Left on a Sunday)
- Boku dake ga Inai Machi (Erased / The Town Where Only I am Missing)
- Shin Sekai Yori (From the New World)
- Maoyu (Sorta)
- Mekakcity Actors
- Oretachi ni Tsubasa wa Nai
- Saenai Heroine no Sodatekata (Sorta)
- Steins Gate
- Time of Eve

If you want some seinen action anime with a plot:
- Ajin
- Aldnoah Zero (mecha)
- A Certain Magical Index / Scientific Railgun
- Baccano! (Nearly qualifies for the above.)
- Gangsta (Beck'ish)
- Drifters (Well, some plot)
- GiTS (okay, too obvious)
- Knights of Sidonia (2nd season kinda leaves "seriousness" behind though)
- Psycho-Pass (also, possibly, too obvious)
- Casshern Sins
- Tokyo Ghoul (gore fest)
- Parasyte the Maxim (also gore fest)

Somewhat mature action non-anime that's recently aired or airing:
- The Expanse
- Oasis
- Legion
- Westworld

Berserk's not my cup of tea - though Beck came a bit closer, so, grain of salt recommended.

>>305135
This

>>305023
>>305032
if you rate what you've watched on mal it will give you recommendations, though i can't speak to the quality of the recommendations/how relevant they are.

>>305023
I presume this is about anime?
>I feel like I've already watched everything that there is to watch
No you haven't unless you're a proto-neckbeard who has been watching anime since the 70s.
Look further than MAL top popularity list and explore.