Horde 2: The Citadel is a fantasy real-time strategy (RTS) sequel released in December 2001, continuing the story of the Semirechye land and its struggle against nomad invaders. Availability and Localization

Undead Horde 2: Necropolis: A modern 2023 game available on Steam.

Because the game was released over two decades ago, finding a legal digital download for the English version can be challenging. Most available versions are in Russian or Lithuanian, but community-maintained links do exist:

What Exactly is "Horde 2: The Citadel"?

First, a crucial clarification. Unlike major AAA titles, Horde 2: The Citadel is not a commercial game found on Steam or Epic Games Store. It is a celebrated custom map or campaign mod originally built within the engine of a popular RTS game, often associated with Warcraft III: The Frozen Throne or a standalone indie tribute to games like Lord of the Rings: Battle for Middle-earth.