Magnum Opus

In a dark world, where you the player are a worm-like parasite created from an alchemical experiment, the creature you play controls and lives in darkness, the experiment who was responsible for your birth was in reality the success anyone had to create the legendary Philosopher's Stone, inadvertently, while the Stone was created; you the player, a malevolent worm-like creature, a dark counterpart to the stone have also been invoked. You have a single goal: find the Philosopher's Stone and to reunite with it.

A game by André, Bruno, Isaac and Haroun,

We have a Game Design Document