Is Invasion from the Unknown free?

Yes. Invasion from the Unknown is released under GPL-2.0-or-later and costs nothing. Neither it nor The Battle for Wesnoth has any paid content.

What do I need to run Invasion from the Unknown?

The Battle for Wesnoth, which is itself free. Invasion from the Unknown is an add-on and will not run standalone.

How do I install Invasion from the Unknown?

The PlayBound Launcher installs it in one click from The Battle for Wesnoth's mods list. You can also install it by hand — full steps are on this page.

How big is Invasion from the Unknown?

Roughly 48 MB, on top of the base The Battle for Wesnoth installation.

Is Invasion from the Unknown open source?

Yes. The source is published at github.com/project-ethea/Invasion_from_the_Unknown under GPL-2.0-or-later.

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Mod

Invasion from the Unknown

Epic story campaign with bespoke unit lines and custom soundtrack.

By The Wesnoth Project

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