Eagle-Gryphon Games
On Mars: Alien Invasion Expansion Board Game
On Mars: Alien Invasion Expansion Board Game
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Product overview
Defend the Red Planet from alien threats with cooperative, solo, and one-versus-many story chapters.
A story-driven On Mars expansion for experienced players who want new modes, tougher challenges, and a dramatic sci-fi twist.
On Mars: Alien Invasion expands the base game with a story-led sci-fi challenge where Mars is no longer only about building a colony. Across four different chapters, players face alien threats, defend the settlement, manage new crisis systems, and explore cooperative, solo, and one-versus-many ways to play.
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Shipping & Delivery
Shipping & Delivery
Fast, reliable delivery across South Africa. Orders placed before 14:00, Monday to Friday, are processed the same business day. Standard delivery takes 2–3 working days from dispatch.
Delivery is R90 for orders under R750. Orders of R750 or more qualify for free shipping. View our Shipping & Delivery Policy for full details.
Returns & Support
Returns & Support
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Once approved, refunds are usually processed within 5–7 working days to the original payment method. View our Returns & Refund Policy for full details, or Contact Us. We’re always happy to help.
About this product
Defend the Red Planet from alien threats with cooperative, solo, and one-versus-many story chapters.
A story-driven On Mars expansion for experienced players who want new modes, tougher challenges, and a dramatic sci-fi twist.
On Mars: Alien Invasion expands the base game with a story-led sci-fi challenge where Mars is no longer only about building a colony. Across four different chapters, players face alien threats, defend the settlement, manage new crisis systems, and explore cooperative, solo, and one-versus-many ways to play.
Product Description
On Mars: Alien Invasion expands the original On Mars board game with a tense story campaign across four different chapters. Players may defend Mars together, face an Alien Commander, survive outbreaks and sabotage, or take on a configurable solo challenge.
Why you’ll love it
- Adds four story chapters that each change how On Mars plays.
- Includes different play modes: one-versus-many, cooperative, and solo.
- Fresh alien threat system with alien troopers, alien buildings, alien tech, and new defensive tools.
- New human defence options including Sentry Bots, the Defense Exosuit, Shields, Sabotage, Medicine, Hospitals, and more.
- More replay value for On Mars fans who want new challenges beyond the base game.
- Story by Nathan Morse adds a sci-fi narrative layer to the heavy strategy gameplay.
- Designed by Vital Lacerda with artwork by Ian O’Toole, making it a strong add-on for serious strategy gamers and On Mars collectors.
- Includes the Beacon promo card for use with the base game.
Quick Details
- Product type: Board game expansion
- Base game required: Yes, requires On Mars
- Players: 1–5 depending on chapter
- Recommended age: Use On Mars base game age guidance
- Difficulty: Medium-Hard / Hard
- Theme: Mars colonisation, alien invasion, survival, cooperation, sci-fi defence
- Game style: Heavy strategy expansion / cooperative and scenario-based gameplay
- Designer: Vital Lacerda
- Story: Nathan Morse
- Artwork: Ian O’Toole
- Expansion available: This is an expansion for On Mars
Good to Know
- On Mars: Alien Invasion is an expansion and requires the On Mars base game to play. Start with On Mars to build the colony, learn the orbit-and-surface action system, and develop the life-support network before adding the alien invasion chapters.
- This is not a standalone board game.
- The expansion is divided into four chapters, and each chapter changes the game experience in a different way.
- Chapters can be played in story order, but the scenario book also says they can be played in any order if preferred.
- Chapter 1: Invasion is a one-versus-many mode where one player controls the Alien Commander against the human team.
- Chapter 2: Outbreak is a cooperative chapter where players work together to control a dangerous colony-wide crisis.
- Chapter 3: Blackout is a cooperative chapter about alien sabotage and keeping key buildings running.
- Chapter 4: Monolith is a solo chapter with configurable difficulty.
- Most chapters are cooperative, so the group can lose together if the chapter goal is not achieved.
- Best for players who already know On Mars and want more challenge, more story, and new ways to play.
Care & Maintenance
Store alien meeples, tokens, cards, boards, and scenario components neatly after play.
Keep each chapter’s components grouped separately where possible so setup stays easier next time.