Buta no Gotoki (full title: Buta no Gotoki Sanzoku ni Torawarete Shojo o Ubawareru Kyonyuu Himekishi & Onna Senshi
The remains a landmark of the "despair game" genre. It refuses to let the player feel good. It forces you to sit in the mud of a broken psyche. Years after playing, you might not remember the puzzles or the pixel art, but you will remember the sound of the cleaver hitting the block, the whisper in the hallway, and the terrifying realization that the cage door in the story was never locked.
Yakuza 0 received critical acclaim for its engaging storyline, improved combat mechanics, and detailed depiction of 1980s Japan. It's considered one of the best games in the series and a great starting point for newcomers.