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 $1.1M — a different platform, not this one.

Hitman: Codename 47

Buy in a bundle & save more You can buy this game in a bundle to get the best price. Pay only for the titles you don’t already own and enjoy an additional discount on them. To us society is normal. We walk the streets fearing no one and nothing. Yet through his ice blue eyes, Agent 47 sees a world of potential threat and danger. He watches interested, but uninvolved. Your time has come to enter the Hitman’s world. A world where you trust no-one but yourself, a player in a deadly game, a warrior on a battlefield most people don’t even know exists. This slick 3rd person action-adventure game presents a mix of stealth and combat. As the Hitman you must move without sound, kill without emotion, and disappear without trace. There are many ways to finish a mission and it is up to you to find the best, most silent one. At your disposal is an impressive arsenal of weapons and gadgets available for purchase between missions. Carry out your ‘hits’ effectively and a story of greed, power, and jealousy will start to unfold, in addition to a considerable amount of blood money.