An unlocker for Anno 1800 DLCs is a third-party software tool or file modification designed to bypass Ubisoft's digital rights management (DRM) and entitlement checks. It trickles the game into believing that you own all released downloadable content (DLC) expansions without you actually purchasing them through the official Ubisoft Connect or Steam storefronts.

Includes all major gameplay DLCs and Season Passes but excludes cosmetic packs.

The is a technical marvel of the modding community, proving that where there is DRM, there will be a bypass. It offers a tantalizing promise: the complete Industrial Revolution experience for zero dollars.

Over the years, the modding community has produced several working unlockers. As of late 2024, the following are the most discussed: