: The internal game engine was adjusted to better handle Windows 10 and 11 display scaling, preventing the "black screen" or "windowed mode" bugs that some users reported on high-refresh-rate monitors.

While (the developer) and Playism (the publisher) typically release technical updates for La-Mulana to address long-standing engine quirks, this specific version includes the following:

: Fixes were implemented to resolve issues where certain achievements would not trigger correctly or where cloud saves would fail to sync upon closing the game.

: Minor corrections to the English and Japanese scripts were included to fix typos that had persisted since the previous major update (v1.5.5). Context of the Update

La-Mulana is a notoriously difficult "Archaeological Ruin Exploration Action Game." Because of its complex internal logic and many "event flags," these incremental updates (like v1.6.6.1) are crucial for ensuring that players don't encounter game-breaking bugs in the late-game areas like the or the Hell Temple .

The on GOG primarily serves as a maintenance patch to improve the game's stability and ensure compatibility with modern operating systems and digital storefront features. Key Changes and Technical Details

: The update aligns the GOG version with recent builds on other platforms, ensuring that "Quality of Life" fixes—such as controller mapping improvements and resolution scaling—are consistent across versions.