To play Anno 1800 on Uplay, you need to:
- Download Uplay desktop app
- Login and press Anno 1800 - Free Weekend banner to activate a trial version of the game on your account:
The free weekend is also available on Epic Games. During this time, you can access the first three citizen tiers in sandbox mode and multiplayer sessions.
You can enjoy this title for free until 15 March. If you want to continue playing after free week, you can purchase Anno 1800 at special promotional price.