Changelog for Patch 1.01 (26 November 20115):

- OpenAL bug fixed; the audio is playing normally now, leaving no one with an uncannily mute game.
- Firestarters sound volume fixed. There'll be no more ridiculously loud cries from any distance upon firestarters being disturbed.
- Codec notification added. If you're unable to launch the game properly for the lack of codecs, the game will now notify you of this so that fixing the issue would be easier.
- A number of text bugs and typos fixed, including several embarrassing ones.

Changelog for patch 1.0.2 / GOG-3 (Windows) (added 20 January 2016):

- [Gameplay] fixed a bug that sometimes made dropped items unavailable, possibly locking you out of completing a quest;
- [Gameplay] fixed a bug with the Changeling not unlocking properly under Windows XP
- [Text] another round of typos fixed and minor text corrections introduced.
- [Combat] (Russian version only) fixed crash in combat that happened for some users.

Pathologic Classic HD

Changelog for patch 1.0.3 / GOG-4 (Windows) (added 26 April 2016):

- [Text] yet more typos in the English version;
- [Translation] the Italian translation, generously donated to us by the game's original translators, Stefano Gaburri and Claudio Todeschini, added.

I've received no notifications for this game's updates. (oh look, and it still tells me I don't own the game on the game page.)

Pathologic Classic HD

Changelog for update (added 04 December 2017):
[Windows Only]

- Installer maintenance update - No game files were changed.