This follows a recent controversy involving DRM for the game.
Click image for larger version Name: ss_d2f7ec72928847ec3e3becc3bd195f833ce846fe.1920x1080.jpg Views: 6484 Size: 166.7 KB ID: 3513802

GOG have pulled the 2016 version of Hitman from their store following a recent controversy surrounding some issues players took with the offering. GOG tends to pride itself on bring a DRM-free digital storefront for games. When Hitman was added to the shop in September, it relied on needing an online connection to access many features found in the game.

Shortly after the game's release on GOG, the company had put a warning at the top of the page warning users about this required internet connection. Being online allowed users to access the game's Escalation missions, Elusive Targets, and user-created Contract missions. The game's main story and other missions were still able to be played offline. However, users were also quick to note that an internet connection was also required to unlock new gear, new starting locations, and even outfits.

The fan outrage continued for quite a few weeks until GOG made the decision to pull the game from their storefront just two days ago. A team member for GOG posted on their forums that they are "in dialogue with IO Interactive about this release."

Thank you for your patience and for giving us the time to investigate the release of HITMAN GOTY on GOG. As promised, we’re getting back to you with updates.

We're still in dialogue with IO Interactive about this release. Today we have removed HITMAN GOTY from GOG’s catalog – we shouldn’t have released it in its current form, as you’ve pointed out.

We’d like to apologise for the confusion and anger generated by this situation. We’ve let you down and we’d like to thank you for bringing this topic to us – while it was honest to the bone, it shows how passionate you are towards GOG.
There was a period of time after release where GOG was apparently caught removing user reviews for the game. They claimed that users were review bombing the game. After being called out for removing what seemed like legitimate complaints, GOG then clarified that they would only remove reviews that broke their review policies.