Question 1

Is Unknown Horizons completely free?

Accepted Answer

Yes. Unknown Horizons is open-source software released under the GNU GPL, with no purchase or paid currency required.

Question 2

What kind of game is Unknown Horizons?

Accepted Answer

It is a real-time economy and city-building strategy game focused on island settlement, production chains, trade, and diplomacy.

Question 3

What is the current Windows version of Unknown Horizons?

Accepted Answer

The latest broadly packaged stable Windows release is 2019.1. Development continues in the source repository, so PlayBound lists it as Testing until newer Windows packaging is verified.

Question 4

Does Unknown Horizons have multiplayer?

Accepted Answer

No. Unknown Horizons is a single-player game, so there is no multiplayer mode to join or host.

Question 5

Is unknown-horizons still active in 2026?

Accepted Answer

Yes. unknown-horizons met PlayBound's "actively maintained" criterion when last checked on 2026-08-30 — it had a release or meaningful commit within the preceding twelve months.

Question 6

Is unknown-horizons open source?

Accepted Answer

Yes. The source code is published at github.com/unknown-horizons/unknown-horizons under Open Source. Open source is a nice property when it is present — it is not required to clear the PlayBound Bar.