No revenue estimate for GOG — its rating/review counts don't calibrate to sales the way Steam's do. The Steam version is estimated at $3M — a different platform, not this one.

Styx: Shards of Darkness

Styx returns in a new stealth adventure! Hired for a critical mission, explore and master huge open environments as Styx. Assassinate or sneak past enemies – Humans, Elves and Dwarves – but also much more fearsome, colossal creatures. Experiment with the new array of lethal abilities and weapons in your goblin assassin's arsenal. Spend experience points in assassination, infiltration, magic, to learn new skills and improve abilities. Explore, recover valuable artifacts and ingredients to craft deadly traps and useful items, and create clones of yourself to deceive your enemies! This version on GOG does not include Co-op features. As a token of apology, we offer the DLC 'Akenash set' as a part of every purchase. Enhance your gaming experience in Styx: Shards of Darkness! The Akenash Set DLC gives you access to the iconic Akenash Outfit and the Akenash Dagger. The Akenash Outfit Here's the one-and-only, classic outfit from Styx's first adventure! Whenever Styx summons a clone, its duration before disappearing is increased. The Dagger of Akenash Styx's first dagger. Old yet sturdy, this rusty blade was dragged through miles of infested marshes. This caused it to be covered in all manner of deadly acid. Anyone killed with the Dagger of Akenash will dissolve instantly.