Planescape: Torment is a role-playing video game developed by Black Isle Studios. Released on December 12, 1999, the game takes place in locations from the multiverse of Planescape, a Dungeons & Dragons fantasy campaign setting. The game's engine is a modified version of the Infinity Engine, which was used for BioWare's Baldur's Gate, a previous D&D game set in the Forgotten Realms.

Planescape: Torment is primarily story-driven and combat is not prominent. The protagonist, known only as The Nameless One, is an immortal who has lived many lives but has forgotten all about them, even forgetting his own name. The game focuses on his journey through the city of Sigil and other planes to reclaim his memories of these previous lives. Several characters in the game may join The Nameless One on his journey, and most of these characters have encountered him in the past or have been influenced by his actions in some way.

The game was not a significant commercial success but received widespread critical praise and has since become a cult classic. It was lauded for its immersive dialogue, for the dark and relatively obscure Planescape setting, and for the protagonist's unique persona, which shirked many characteristics of traditional role-playing games. It was considered by video game journalists to be the best role-playing game of 1999, and continues to receive attention long after its release.

This game is responsible for the most immersive gaming experience I've ever had. If you can forgive the clunkiness that inevitably comes with a pre-2000s release, this is one that *no* gamer should overlook.

Need further convincing to check it out? Just read some of the reviews it has garnered on GoG! Those pages upon pages of 5-star reviews don't lie.

https://www.gog.com/game/planescape_torment