%2Fpic8160466.jpg&w=3840&q=75)
About SETI: Search for Extraterrestrial Intelligence
SETI casts you as a research institution hunting for evidence of life beyond Earth. You launch probes onto a solar system that physically rotates as the game progresses, point telescopes at distant stars, and slowly assemble the data that proves somebody is out there. The alien species you eventually uncover are hidden at setup, so the back half of the game changes shape depending on what you find.
This post contains affiliate links. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.
Is SETI: Search for Extraterrestrial Intelligence Right for You?
Best for
SETI is for groups who want a heavy euro whose theme is doing real work. The rotating board makes trajectory planning genuinely spatial rather than abstract, and the hidden alien modules mean the endgame is not the same puzzle every time. It plays best at two or three, where you can hold the whole board in your head.
Maybe skip it if…
It is long and it is fiddly, with a lot of small components and a board that physically changes between rounds. Players who want a tight ninety minutes should look at Harmonies or Forest Shuffle instead. The theme also promises more narrative than the mechanics actually deliver.
How to Play SETI: Search for Extraterrestrial Intelligence
Setup
Assemble the rotating solar system board, seed the alien species modules face down, and give each player a starting hand of cards, income and a research board.
On Your Turn
- Play a card for its action or discard it for basic income, then take one main action.
- Launch and manoeuvre probes, scan sectors with telescopes, or analyse data you have already collected.
- Advance the shared science tracks; crossing a threshold reveals more of what is actually out there.
How to Win
The game ends after a fixed number of rounds. Score research, probes landed, alien discoveries and end-game objectives.
💡 Strategy Tips
The planets move. A probe launched at where Mars is now will arrive where Mars is going to be.
Common Mistakes to Avoid
- Launching probes without checking where the target planet will be when the probe arrives. The board rotates, and a beautifully planned trajectory can miss entirely.
- Scanning sectors at random. Telescope data only pays off when it stacks in the same region, and scattered scans mostly produce nothing.
- Treating the card row as a resource pile. Discarding for income is safe and almost always the weaker play once your engine exists.
- Ignoring the science tracks in the first third. They gate the reveals, and a player who advances them early gets to plan against information nobody else has.
Advanced Strategy
- Plan two launches ahead. The orbital positions repeat on a known cycle, so the board is predictable even though it moves.
- Commit to either probes or telescopes as your primary route early. Splitting evenly produces a respectable score and almost never wins.
- Watch which species have been revealed before you specialise your end-game scoring. Some reward breadth, some reward a single deep line of research.
- Cards used for their action are worth far more than cards used for income, so build the income engine that lets you stop discarding.
Variants & House Rules
The alien species modules
Several distinct species are included and only some appear in any given game. Rotating them is the main source of replay value and is built into normal setup.
Solo mode
A scripted opponent that competes for the same discoveries. Well regarded, and a reasonable way to learn the trajectory rules without holding up a table.
Video Guides
Loading videos…
Our Verdict
SETI is the most thematically satisfying heavy game we have played in a while, because the central conceit actually shapes how you play rather than just decorating it. Waiting three rounds for a probe to arrive somewhere useful should be tedious and instead it is tense. It asks for a long evening and rewards it.
Frequently Asked Questions
How long is a game of SETI?
Around two hours at two players and closer to three at four, plus a substantial teach the first time.
Is the rotating board a gimmick?
No. It changes what launches are legal each round and is the main reason probe planning is interesting. It is the best part of the design.
Is it similar to Terraforming Mars?
They share a card-driven space theme and a similar weight, but SETI is more spatial and less about engine combos. Groups often own both.