The game requires an internet connection for so many singleplayer features that customers on the DRM-free digital store are real mad about it.

At the top of Hitman's GOG store page, a note states that an "Internet connection is required to access Escalation missions, Elusive Targets or user-created Contracts.

If you are opposed to limitations being placed upon software you've legally bought, or worry about long-term ownership in the event of services shuttering, or if you just want to be able to play games without needing an internet connection, then DRM-free is an appealing option.

The issue is that an increasing number of technically "DRM-free" games require an internet connection for all kinds of non-obvious features.

The reviews on GOG are alternately cross at Hitman developers IO Interactive for not making better offline options, and cross at GOG for putting Hitman on their supposedly DRM-free store.