Terraforming Mars vs Ark Nova: Which Should You Buy?

Terraforming Mars is the purest engine-builder of the pair. You are a corporation playing cards, over two hundred of them, each one bolting another part onto your economy as you push Mars toward habitable. The thing players rave about is that engine: reviewers who put twenty games in say no two felt the same, and theme and mechanics line up so every action feels like it is actually changing the planet. The flip side is downtime, since a heavy card hand invites analysis paralysis, and an early lead tends to snowball.

Ark Nova puts you in charge of building a modern, conservation-minded zoo, drafting animals, sponsors, and projects from a deck of more than two hundred cards. There are many different routes to a winning zoo, and it is thematically rich in a way heavy euros usually are not. You are juggling several interlocking systems at once, and players three years deep still call it their favorite because there is so much packed into the box that it keeps showing you new things. The pace can sag at higher player counts while everyone thinks.

Both are serious commitments, but on paper Terraforming Mars rates as the heavier of the two, sitting at Heavy versus Ark Nova's Medium-Heavy. In practice the teach is brutal on both: Ark Nova's rules overhead is real, and more than one reviewer has flatly called teaching it a chore, while Terraforming Mars demands that players actually want a heavy euro and will happily spend two hours feeding a machine they built from scratch.

Neither is a game you spring on a casual table. The player who bounces off Terraforming Mars wants something light and quick, and is put off by the sliding-cube components and the slow turns. The player who bounces off Ark Nova underestimated the long first teach. Both punish impatience and reward folks who like the deep end, so the choice here is less about which is easier and more about which theme and structure you find more inviting.

Replayability is a strength for both, drawn from those enormous card pools. Terraforming Mars has over two hundred project cards and twelve corporations, so the variety is genuinely huge, and the engine-building is some of the most satisfying in the hobby. Ark Nova goes a step further on freshness: you see only about half its cards in any game, so it keeps reinventing itself for years.

On polish, Ark Nova has the clear edge. Terraforming Mars is loved despite its production, since the component quality is rough for the price and those plastic cubes slide all over a bumped table, so many players grab a playmat or baggies to tame them. Ark Nova feels like the more modern, thematically immersive package on the table. Both sag at their higher player counts, with three or four being the sweet spot for each.