Terraforming Mars vs Ark Nova: Which Heavy Euro Fits You?

Quick answer

Choose Terraforming Mars if you want a sprawling engine-builder where every card combo feels like a small victory and you don't mind a longer, more mathy experience. Choose Ark Nova if you prefer a tighter, action-selection puzzle with a zoo theme and a more streamlined turn structure. Both are heavy euros, but they reward different kinds of planning.

Theme and table presence

Terraforming Mars casts you as a corporation racing to make the Red Planet habitable. The board is a hex map of Mars, and you'll place tiles for oceans, forests, and cities while tracking oxygen, temperature, and your own production. It's a sprawling, spreadsheet-like experience that many players love for its thematic arc.

Ark Nova puts you in charge of a modern zoo. You'll build enclosures, release animals, and manage conservation projects on a central board that feels more like a personal player mat. The visual style is bright and clean, and the action-selection mechanism keeps turns snappy even when you're planning several moves ahead.

Complexity and rules overhead

Both games sit firmly in the heavy euro category, but they teach differently. Terraforming Mars has a large deck of project cards with unique effects, and new players often need a few rounds to understand how production, tags, and milestones interact. The rulebook is dense but logical.

Ark Nova uses a card-driven action system where you choose from five actions, each with varying strength depending on where your action cards sit. This can feel more intuitive because your options are always visible, but the sheer number of animal and sponsor cards still creates a steep learning curve. If your group dislikes reading lots of card text, both games will demand patience.

Player count and downtime

Terraforming Mars plays well at two to four players, though at higher counts the downtime between turns can stretch as players chain card actions and manage resources. With two players, it becomes a tense duel of efficiency.

Ark Nova is designed for one to four players and tends to move faster because each turn is a single action. The action-selection grid means you're rarely waiting long for your next decision, making it a better fit for groups that value a steady pace.

Replayability and expansion paths

Terraforming Mars offers enormous replayability out of the box thanks to the project card variety and different corporation starts. Expansions like Prelude and Colonies add new dimensions, but the base game alone can last dozens of plays.

Ark Nova also has high replay value with a large deck of unique animals and a variety of zoo layouts. Its first major expansion, Marine Worlds, introduces new action cards and universities, but even without it, the base game provides plenty of strategic depth. Neither game requires expansions to feel complete.

Component quality and storage

Terraforming Mars is known for functional but sometimes underwhelming components—thin player mats and basic cubes. Many players upgrade with aftermarket trays or overlays. The box is large and heavy, so storage can be a puzzle.

Ark Nova comes with dual-layer player boards that hold cubes securely, and the cardboard tokens are sturdy. The insert is decent but not perfect for sleeved cards. If you plan to sleeve either game, budget for extra storage space.

Trade-offs at a glance

• Terraforming Mars: theme vs. downtime: The engine-building and Mars terraforming theme is immersive, but player turns can be long, especially with four players who like to optimize. Great for patient planners who enjoy watching their corporation grow.
• Ark Nova: pace vs. card text: The action-selection system keeps turns quick, but the huge deck means you'll read a lot of unique card abilities. Better for groups that prefer a steady rhythm and don't mind text-heavy cards.
• Component and storage needs: Terraforming Mars often needs aftermarket storage and player aids; Ark Nova has better out-of-the-box boards but still benefits from sleeving and a dedicated box. Factor in accessory costs if you want a tidy, long-lasting copy.

Useful accessories for these heavy euros

• PRIME Sleeves: Scythe and-or Lost Cities (72 x 112 mm): PRIME Sleeves: Scythe and-or Lost Cities (72 x 112 mm) are 100-micron polypropylene sleeves that provide premium protection and a great shuffle feel. Terraforming Mars and Ark Nova both use standard card sizes, and these sleeves will keep frequently shuffled project and animal cards in good condition for years.
• Games Lair 600+ Red: Games Lair 600+ Red holds a vast variety of games, accessories, miniatures, and card-related games, and its fully removable cover converts into a magnetic dice tray. Both games come with many tokens and cards, so a dedicated storage box like this keeps components organized and makes setup faster.

Which should you buy?

Best for

• Players who love deep engine-building and don't mind a longer game with more math.
• Groups that enjoy a shared board where players compete for limited spaces.
• Fans of science fiction and terraforming themes.

Not for

• Groups that prefer fast turns and minimal downtime.
• Players who dislike reading extensive card text or managing many resources.
• Those who want a lighter, more casual euro experience.