Ludexv2026.11.01-65114139SETI: Search for Extraterrestrial IntelligenceOfficial rulebook ↗

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FAQ

59 answered questions46 official

Rules questions from the BoardGameGeek forum. Answers marked Official were confirmed by Czech Games Edition or the designers.

Common mistakes

  • Choosing the tech before rotating the solar system — the rotation always comes first. Ruling · Rule
  • Taking free actions between turns or on someone else’s turn — only on your own turn. Ruling · Rule
  • Covering two triggerable mission circles with one action — one trigger, one circle. Ruling · Rule
  • Counting the sector-win marker as a signal for card conditions. Ruling · Rule
  • Placing both neutral markers at once — a neutral milestone places one marker per player reaching it. Ruling · Rule
  • Counting the starting income card’s printed income on the income gold tiles. Ruling · Rule
  • Paying an action’s base cost on top of the card that grants it. Ruling · Rule

Showing 59 of 59

Are effects mandatory? Can I choose to ignore a bonus? Official

You must resolve effects, but some offer a choice: you may decline to tuck a card for income, or move a probe 0 spaces. Rotating the solar system, marking signals, taking a tech, gaining resources or points, marking a trace (an overflow space is always available), a main action a card tells you to take, and reached milestones cannot be skipped. An effect you can’t carry out (no card to tuck, no probe to move) is simply skipped.

Source: BGG thread

Turns and Free ActionsRounds, Turns and Free Actions › your turnRounds, Turns and Free Actions › free actions listRounds, Turns and Free Actions › incomeRounds, Turns and Free Actions › pass

Do I resolve a card’s or action’s effects from left to right? Official

Yes, that is the intended order; effects without a choice come first. The order that always matters: rotate the solar system before taking a tech.

Source: BGG thread

Turns and Free ActionsRounds, Turns and Free Actions › your turnRounds, Turns and Free Actions › free actions listRounds, Turns and Free Actions › incomeRounds, Turns and Free Actions › pass

When exactly can I play free actions? Can they interrupt a main action? Official

Only on your own turn — before, after or in the middle of your main action. A free action can interrupt a main action (for example place the data from a scan, gain publicity, then spend it on the Mercury telescope tech in the same scan), but one free action can’t interrupt another: resolve each completely first.

Source: BGG thread

Turns and Free ActionsRounds, Turns and Free Actions › your turnRounds, Turns and Free Actions › free actions listRounds, Turns and Free Actions › incomeRounds, Turns and Free Actions › pass

Can I weave free actions between the steps of my main action? Official

Yes, that is what free actions are for. A tech, though, always rotates the solar system before you take it, so you can’t move a freshly launched probe before that rotation.

Source: BGG thread

Turns and Free ActionsRounds, Turns and Free Actions › your turnRounds, Turns and Free Actions › free actions listRounds, Turns and Free Actions › incomeRounds, Turns and Free Actions › pass

Pass action: several times? Official

No. Passing means you are done for the round: one pass, one end-of-round card, then you watch the others finish.

Source: BGG thread

Turns and Free ActionsRounds, Turns and Free Actions › your turnRounds, Turns and Free Actions › free actions listRounds, Turns and Free Actions › incomeRounds, Turns and Free Actions › pass

Do players choose their starting income tuck simultaneously? Official

Yes, the intent is simultaneous. Card income always draws random cards from the top of the deck, never from the row.

Source: BGG thread

Turns and Free ActionsRounds, Turns and Free Actions › your turnRounds, Turns and Free Actions › free actions listRounds, Turns and Free Actions › incomeRounds, Turns and Free Actions › pass

Do you increase income at the start of every round?

No. At the start of each round you collect the income you have; you increase it only when an effect gives :icon[income] and you tuck a card — which also pays its resource at once.

Source: BGG thread

Turns and Free ActionsRounds, Turns and Free Actions › your turnRounds, Turns and Free Actions › free actions listRounds, Turns and Free Actions › incomeRounds, Turns and Free Actions › pass

Can I play a card from the card row instead of my hand?

No. You can only play cards from your hand; take a row card first (3 publicity, or a resource exchange), then play it.

Source: BGG thread

Turns and Free ActionsRounds, Turns and Free Actions › your turnRounds, Turns and Free Actions › free actions listRounds, Turns and Free Actions › incomeRounds, Turns and Free Actions › pass

Can I exchange two different resources, say a card and an energy, for one credit? Official

No, only two of the same kind. Alien cards in your hand are cards, so a card and an alien card make a pair — Exertian cards can’t be discarded.

Source: BGG thread

Turns and Free ActionsRounds, Turns and Free Actions › your turnRounds, Turns and Free Actions › free actions listRounds, Turns and Free Actions › incomeRounds, Turns and Free Actions › pass

How does ignoring the limit of probes in space work? Official

A card whose launch ignores the limit ignores it for that launch only; later launches respect the limit again.

Source: BGG thread

Probes and MovementProbes, Orbiters and Landers › launch a probeProbes, Orbiters and Landers › movementProbes, Orbiters and Landers › rotating the solar system

Can I split the moves from one effect between my probes? Official

Yes. Probes move orthogonally and never into or through the Sun. Visiting the same planet twice in one turn gives publicity twice.

Source: BGG thread

Probes and MovementProbes, Orbiters and Landers › launch a probeProbes, Orbiters and Landers › movementProbes, Orbiters and Landers › rotating the solar system

How should a probe behave when it is pushed by the solar rotation while in a gap?

It is pushed into the next space as if the gap weren’t there.

Source: BGG thread

Probes and MovementProbes, Orbiters and Landers › launch a probeProbes, Orbiters and Landers › movementProbes, Orbiters and Landers › rotating the solar system

Do I get publicity if the rotation pushes my probe onto a comet? Official

Yes. A probe always earns publicity when it visits such a space, even on someone else’s turn.

Source: BGG thread

Probes and MovementProbes, Orbiters and Landers › launch a probeProbes, Orbiters and Landers › movementProbes, Orbiters and Landers › rotating the solar system

Can I discard a card for its move corner without a probe in space? Official

Yes. You don’t need a probe to gain a move effect, and you may always move 0 spaces — handy for missions that trigger on discarding.

Source: BGG thread

Probes and MovementProbes, Orbiters and Landers › launch a probeProbes, Orbiters and Landers › movementProbes, Orbiters and Landers › rotating the solar system

Can I land with an orbiter? Official

No. An orbiter stays in orbit for the rest of the game; it can’t return to the solar system board or land.

Source: BGG thread

Orbiting and LandingProbes, Orbiters and Landers › orbit a planetProbes, Orbiters and Landers › land on a planet or moon

Do I get the landing discount for an opponent’s orbiter? Official

Yes — any orbiter at that planet makes landing cheaper. Moons count as their planet for discounts, including the landing tech.

Source: BGG thread

Orbiting and LandingProbes, Orbiters and Landers › orbit a planetProbes, Orbiters and Landers › land on a planet or moon

Are orbiters and landers still probes for card effects? Official

No. Only figures on the solar system board are probes. To “visit” a planet you must move a probe onto its space; already standing there when you play the card doesn’t count.

Source: BGG thread

Orbiting and LandingProbes, Orbiters and Landers › orbit a planetProbes, Orbiters and Landers › land on a planet or moon

Does the marker used to mark the sector’s win count as a signal? Official

No. It only records your win (and covers a better first-win reward). Cards and gold tiles may count your wins, never as signals.

Source: BGG thread

Scanning and SectorsSignals, Sectors and Data › scan nearby starsSignals, Sectors and Data › marking signalsSignals, Sectors and Data › sectors

Is marking a signal mandatory, even in a full sector? Official

Yes, and it is always possible: in a full slot you add an excess marker without data.

Source: BGG thread

Scanning and SectorsSignals, Sectors and Data › scan nearby starsSignals, Sectors and Data › marking signalsSignals, Sectors and Data › sectors

When do I refill the card row during a scan? Official

After the whole scan. Cards that discard two or three row cards for signals discard them all first, then the row is refilled.

Source: BGG thread

Scanning and SectorsSignals, Sectors and Data › scan nearby starsSignals, Sectors and Data › marking signalsSignals, Sectors and Data › sectors

Who wins a sector in case of a tie? Official

The tied player whose marker was placed later.

Source: BGG thread

Scanning and SectorsSignals, Sectors and Data › scan nearby starsSignals, Sectors and Data › marking signalsSignals, Sectors and Data › sectors

How do I reset a sector that is won several times?

Each time it completes, the second-placed player leaves one marker on the first space and every other marker returns — so at most one marker stays.

Source: BGG thread

Scanning and SectorsSignals, Sectors and Data › scan nearby starsSignals, Sectors and Data › marking signalsSignals, Sectors and Data › sectors

If one player has all the markers in a completed sector, does anyone stay as second?

No. With no second place, the slot refills completely.

Source: BGG thread

Scanning and SectorsSignals, Sectors and Data › scan nearby starsSignals, Sectors and Data › marking signalsSignals, Sectors and Data › sectors

Question about Kepler Space Telescope card: can I split its two signals between probes? Official

No. Choose one probe; both signals go in its sector.

Source: BGG thread

Scanning and SectorsSignals, Sectors and Data › scan nearby starsSignals, Sectors and Data › marking signalsSignals, Sectors and Data › sectors

James Webb Space Telescope card: one signal or three? Official

Three: one in the sector with your probe and one in each neighbouring sector of that same probe.

Source: BGG thread

Scanning and SectorsSignals, Sectors and Data › scan nearby starsSignals, Sectors and Data › marking signalsSignals, Sectors and Data › sectors

When can I use the Analyze data action? Official

When the 6 round top-row spaces are full (and the upper spaces of any computer techs). Lower tech spaces may be empty, and nothing goes on the hexagonal Analyze icon. Analyzing clears every computer space but not your data pool.

Source: BGG thread

Data and the ComputerSignals, Sectors and Data › your computerSignals, Sectors and Data › analyze data

Can I put more than one data in my computer per turn?

Yes. Placing data is a free action, and free actions are unlimited on your turn.

Source: BGG thread

Data and the ComputerSignals, Sectors and Data › your computerSignals, Sectors and Data › analyze data

Can I place a computer tech in a slot that already holds a tech? Official

No — a tech goes only into an empty slot. A slot holding a data token is fine: slide the tech underneath (no 2 points for it).

Source: BGG thread

Data and the ComputerSignals, Sectors and Data › your computerSignals, Sectors and Data › analyze data

Paying costs for main actions when triggered by a card white effect?

No. A card that includes an action replaces that action’s normal cost with the card’s own cost.

Source: BGG thread

Cards and MissionsCards, Missions and Techs › play a cardCards, Missions and Techs › missions

Can I cover multiple rewards on triggerable missions at once with a single action? Official

No. One trigger covers one circle, on one card, even when a specific trigger and a generic one both match. Trigger again for the next.

Source: BGG thread

Cards and MissionsCards, Missions and Techs › play a cardCards, Missions and Techs › missions

Do mission conditions count other players’ pieces? Official

No. Cards refer to your own pieces and actions unless they say otherwise.

Source: BGG thread

Cards and MissionsCards, Missions and Techs › play a cardCards, Missions and Techs › missions

Are move effects in triggerable mission cards mandatory? Official

No. You may move a probe 0 spaces and still mark the circle, even with no probe on the board.

Source: BGG thread

Cards and MissionsCards, Missions and Techs › play a cardCards, Missions and Techs › missions

Clarification on Project Longshot card: how far is 5 spaces from Earth? Official

As far as a probe moved 5 spaces from Earth would be — 4 spaces in between.

Source: BGG thread

Cards and MissionsCards, Missions and Techs › play a cardCards, Missions and Techs › missions

Identifying mission cards: are Centaurian and Exertian cards missions? Official

No, none of them. Mission cards have the grey band; gold-band cards are end-of-game scoring cards.

Source: BGG thread

Cards and MissionsCards, Missions and Techs › play a cardCards, Missions and Techs › missions

How many times do I rotate with a card that shows both a rotation and a tech? Official

Once. The rotation icon is only a reminder that taking a tech rotates first.

Source: BGG thread

TechsCards, Missions and Techs › research a techCards, Missions and Techs › computer techs

Does the launch-during-scan telescope tech cost 2 credits too? Official

No, just the 1 energy — and only during a scan. The plain Launch action still costs 2 credits.

Source: BGG thread

TechsCards, Missions and Techs › research a techCards, Missions and Techs › computer techs

Must computer techs fill the slots left to right? Official

No. Leftmost first is usually better, but if those slots already hold data you may prefer the next empty one to keep the 2-point upper space.

Source: BGG thread

TechsCards, Missions and Techs › research a techCards, Missions and Techs › computer techs

Do I place both neutral markers when I reach a neutral milestone? Official

No, one. The next player to reach it places the next. It goes on the leftmost empty discovery space — the left species first — never on overflow or alien boards.

Source: BGG thread

Milestones and ScoringGame End and Scoring › milestonesGame End and Scoring › gold scoring tiles

Passing both neutral milestones on the same turn?

Place one marker from each milestone.

Source: BGG thread

Milestones and ScoringGame End and Scoring › milestonesGame End and Scoring › gold scoring tiles

What is the exact timing of resolving milestones? Official

At the end of the turn they were reached, with no free actions after; several players resolve in turn order from the active player. This includes alien milestones.

Source: BGG thread

Milestones and ScoringGame End and Scoring › milestonesGame End and Scoring › gold scoring tiles

3 types of income: what counts? Official

Only cards tucked under your income card, not the income printed on it. 4 credit, 2 energy and 3 card incomes make 2 sets. Alien income types don’t count.

Source: BGG thread

Milestones and ScoringGame End and Scoring › milestonesGame End and Scoring › gold scoring tiles

Sector win + orbiter/lander: how do I count? Official

Count every win marker (several in one sector count) and every orbiter and lander, moons included; score the smaller number. 4 wins, 2 orbiters and 3 landers make 4 sets.

Source: BGG thread

Milestones and ScoringGame End and Scoring › milestonesGame End and Scoring › gold scoring tiles

Do I need to fill the spaces on alien boards in order? Official

No. Mark any free space of the trace’s colour: on either alien board, the discovery spaces or the overflow spaces.

Source: BGG thread

Alien SpeciesLife Traces and Alien Species › life tracesLife Traces and Alien Species › the five species

Do I get a discovery reward for marked overflow spaces? Official

No, only the three discovery spaces are rewarded. Overflow and discovery markers do count as traces marked for that species.

Source: BGG thread

Alien SpeciesLife Traces and Alien Species › life tracesLife Traces and Alien Species › the five species

Mascamites: publicity when capsule spawns on a publicity icon? Official

No — publicity comes only from moving into a space, not from a capsule appearing on Jupiter or Saturn.

Source: BGG thread

Alien SpeciesLife Traces and Alien Species › life tracesLife Traces and Alien Species › the five species

Do leftover exofossils score? Official

No, and they can’t be exchanged for resources.

Source: BGG thread

Alien SpeciesLife Traces and Alien Species › life tracesLife Traces and Alien Species › the five species

Can a player at the hand limit gain the Anomalies card?

Yes. The 4-card limit applies only at the moment you pass.

Source: BGG thread

Alien SpeciesLife Traces and Alien Species › life tracesLife Traces and Alien Species › the five species

Exertians: crossing the milestone a second time?

No new card: each Exertian milestone works once, like every milestone.

Source: BGG thread

Alien SpeciesLife Traces and Alien Species › life tracesLife Traces and Alien Species › the five species

Can I look at my own played Exertian cards?

Yes — they are hidden only from the other players.

Source: BGG thread

Alien SpeciesLife Traces and Alien Species › life tracesLife Traces and Alien Species › the five species

Does the rival gain income? Official

No. It has no income card and no starting credits, energy or cards; each income increase moves it 4 spaces on the progress track instead.

Source: BGG thread

SoloSolo: the Rival › the rivals resourcesSolo: the Rival › objectives

Can one action mark both an objective task and a triggerable mission? Official

Yes — objectives and missions are separate, so one trigger can mark one of each.

Source: BGG thread

SoloSolo: the Rival › the rivals resourcesSolo: the Rival › objectives

[Agencies] Can we play 5 rounds with organizations? Official

Not recommended: organizations are balanced for 4 rounds, and a 4-round game with them already lasts about as long as the base game.

Source: BGG thread

Expansion: Space AgenciesSpace Agencies Expansion › playing with organizationsSpace Agencies Expansion › the 11 organizations

[Agencies] Can we play 4 rounds with quick start cards but without organizations? Official

You can, using the base starting income card in place of an organization, but you will reach less than intended and balance suffers.

Source: BGG thread

Expansion: Space AgenciesSpace Agencies Expansion › playing with organizationsSpace Agencies Expansion › the 11 organizations

[Agencies] Do Helion Assembly’s and Cosmos Strategy Group’s abilities count as triggerable missions? Official

No. If one trigger fits both such an ability and a triggerable mission, mark both.

Source: BGG thread

Expansion: Space AgenciesSpace Agencies Expansion › playing with organizationsSpace Agencies Expansion › the 11 organizations

[Agencies] How does the Futurespan Institute’s prepared card work? Official

One prepared card at a time; it leaves your hand and can’t be discarded or tucked. Play it free once your score reaches the token. The once-per-round ability works only while the token is on the track; Centaurian cards can’t be prepared.

Source: BGG thread

Expansion: Space AgenciesSpace Agencies Expansion › playing with organizationsSpace Agencies Expansion › the 11 organizations

[Agencies] Pluto and New Assignment: where does the probe go?

No official answer; players suggest any space of the outer ring.

Source: BGG thread

Expansion: Space AgenciesSpace Agencies Expansion › playing with organizationsSpace Agencies Expansion › the 11 organizations

[Pluto] Can I visit Pluto with a probe? Official

No, it has no space on the solar system board. From any outer-ring space you orbit or land on it at normal cost; only you can, and it holds one orbiter and one lander. It counts as a planet for other effects.

Source: BGG thread

Promo CardsPluto Promo › how pluto worksOther Promo Cards › gateway to marsOther Promo Cards › space agencies promo card

[SA-Promo] What does the Space Agencies promo card’s next-game effect do? Official

Next time you play with quick start cards you are dealt one extra to choose from, still keeping 2 — a small, light-hearted bonus to agree on with your group.

Source: BGG thread

Promo CardsPluto Promo › how pluto worksOther Promo Cards › gateway to marsOther Promo Cards › space agencies promo card

[Mars] Gateway to Mars + Perseverance Rover: two triggers?

Players read playing a Mars card and landing on Mars as two separate triggers, so both circles can be marked. Community reading.

Source: BGG thread

Promo CardsPluto Promo › how pluto worksOther Promo Cards › gateway to marsOther Promo Cards › space agencies promo card

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