# The Unknown (fan expansion for Terraforming Mars)

The Unknown (fan expansion for Terraforming Mars) is a board game for 2–5 players. It plays in 120 minutes and is meant for ages 12 and up. It plays best with 5.

- **Players:** 2–5 (best with 5)
- **Playing time:** 120 minutes
- **Minimum age:** 12+
- **Year published:** 2025
- **Categories:** Expansion for Base-game, Industry / Manufacturing, Science Fiction, Economic, Fan Expansion, Space Exploration, Civilization, Territory Building
- **Mechanics:** Variable Player Powers, Closed Drafting, Dice Rolling, Hexagon Grid, Take That, Contracts, Variable Set-up, End Game Bonuses, Tile Placement, Tags, Income, Turn Order: Progressive
- **Owned by:** 1 Ludoya players

**Designers:** Steven Fröhlich

**Publishers:** (Web published)

## Links

- [This page](https://www.ludoya.com/games/the-unknown-fan-expansion-for-terraforming-mars)
- [The Unknown (fan expansion for Terraforming Mars) in the Ludoya app](https://app.ludoya.com/g/the-unknown-fan-expansion-for-terraforming-mars)
- [BoardGameGeek entry](https://boardgamegeek.com/boardgame/450311)

_Data from Ludoya, updated 2026-11-04. Ratings, ownership and play counts are Ludoya's own._