SETI, Explained: Your First Game and the Space Agencies Upgrade

Czech Games Edition's base SETI supports one to four players, recommends age 14+, and gives a planning estimate of 40 minutes per player. Its rotating solar system, planetary board, technology system, projects and alien discoveries form a complete game.

The published component total includes 216 cards: 138 main project cards, four income cards, 55 alien cards and 19 solo cards. That is a component breakdown, not a promise that you will see every card or species in one session. Two alien species are selected for a game, with their details revealed through discovery.

Space Agencies requires that base game. Buying only the expansion will not supply the boards and core materials needed to play. Conversely, a beginner does not need the expansion to make the original box function.

For the smallest sensible start, buy the correct-language base box and read the multiplayer or solo instructions appropriate to your table. One player does not mean controlling a casual multiplayer seat without the solo system. We do not claim to have reviewed every solo procedure in this article.

Check the exact merchant title and selected edition. During this research, US search results prominently offered Italian-language boxes alongside the English base game. A familiar cover is not enough to establish language or contents.

The English base rulebook gives you one main action on a turn, plus eligible free actions during your own turn. The normal game lasts five rounds. Players pass individually; the round continues until everyone has passed.

That rhythm rewards planning a short chain rather than admiring isolated rewards. A probe in space is a possibility. A probe that reaches a useful planet with enough energy left to orbit or land is a plan. Data in a pool is a possibility. Enough data placed in your computer, followed by an affordable Analyze action, completes another plan.

Use your first hand to identify one plausible chain. Count the credits, energy, movement and actions it needs. Then identify the income or card effects that sustain it. This is a planning exercise, not an instruction to force the same opening from every hand.

Cards have alternative uses. Playing one for its printed effect does not also let you discard that same card for its corner benefit. Tucking a card for income grants its resource immediately and again when income is collected between later rounds. That can be valuable early, but an urgent opportunity or a strong card effect can justify a different use.

Keep free actions within the actual timing rules. You can move, place data or use eligible exchanges on your turn; you cannot reach across another player's turn to tidy your engine whenever convenient.

Launching normally costs two credits. The default limit is one probe in space. A probe converted into an orbiter or lander on the planetary board no longer occupies that limit, which makes completing a mission useful beyond its immediate reward.

Movement is a free action on your turn: one energy buys one step to an adjacent space, not diagonally. Leaving an asteroid space costs an additional movement. The sun is not a shortcut. When an icon or card provides movement, follow that effect rather than paying energy again automatically.

At a non-Earth planet, orbiting is a separate main action costing one credit and one energy. The first orbiter earns an additional three points. Landing normally costs three energy; if any player's orbiter is already at that planet, the cost drops to two. That discount is useful competition and cooperation in the same system, but it does not make landing free.

Moons need a permission effect or technology. A probe beside a planet cannot simply choose any pictured moon. Moon occupancy also differs from the planets' general capacity, so read the destination before promising yourself its reward.

Veteran exercise: before researching, trace how the next solar-system rotation changes your probe's actual route. Research rotates the system before the tech choice. Cutouts and the rotating discs can push some probes and leave others in place. Do not assume every object moves one identical step.

A technically impressive long route is not automatically efficient. Compare the complete trip with the scan or card plan you would give up. The best destination is one your current economy can reach and exploit in time.

A normal Scan action costs one credit and two energy. It marks a signal in Earth's sector and discards a card from the public row to mark a signal in a matching sector. Eligible telescope technologies add their own possibilities and costs.

Marking a signal replaces the leftmost data token in that sector with your marker. You gain that data. Signals beyond a full sector can help decide its winner, but do not produce nonexistent extra data. In a tied sector, the later-placed tied marker wins; the second-place player normally retains a marker when the sector resets.

Your data pool holds at most six. Placing data from that pool into your computer is a free action on your turn, with placement rewards resolved as printed. Do not waste incoming data while waiting for a dramatic future turn if you can legally make room now.

Analyze is a different main action. It costs one energy and requires the computer's top row to be full. Lower spaces supplied by computer technologies do not all need to be filled first. Analysis clears the data in the computer, while data still in your pool remains.

A beginner's useful question: after taking this Scan, can I fill the computer and afford the next Analyze? If not, what resource is missing? The answer often reveals a better card use than simply choosing the most exciting project title.

For an experienced player, compare an extra signal's complete value: data, sector majority, a milestone race, the next analysis and the resource cost of achieving it. An extra marker that advances none of those jobs can be less useful than an apparently modest income improvement.

Space Agencies adds 11 organizations, 21 Quick Start cards, 42 main-deck projects, three alien species and signal tokens, alongside solo material. Those are expansion contents, not an entirely separate game.

With organizations, the game uses rounds two through five: four rounds. Its setup supplies a developed opening rather than asking you to play the base game's first round normally and then skip another round later.

The general organization setup deals two organizations, three Quick Start cards and four main-deck cards. Choose one organization and two Quick Start cards, retaining the main cards as directed. Follow the organization and chosen cards for the resulting opening state. Do not award yourself the upper Quick Start markings as additional rewards; those markings describe the setup being created.

Take the organization's starting resources and effects in the specified order. Ordinary income is not also collected at this initial setup. Income between subsequent rounds still matters. When an opening effect tucks a card for income, its immediate resource gain follows the rule; resolve these effects sequentially rather than adding an imagined general income phase.

For a first organization game, the expansion recommends particular organizations and a simplified selection method. Use that teaching route instead of assuming maximum choice is kinder to a learner.

Quick Start's neutral setup can also be used as its specified module. Keep that distinct from the organization game. 'Four rounds feels faster' is not a license to invent an arbitrary shortened base-game variant.

Expansion signal tokens work during a Scan action. They are not a general payment you can attach to every effect that happens to mark a signal.

Spend a token according to the expansion rule to discard an additional card from the public row and mark a signal in a matching sector. You may spend at most two signal tokens during one Scan. Refill the row after the complete Scan as instructed, rather than fishing for a new card after each individual token.

The printed expansion examples make the distinction concrete. A card that actually grants a Scan, such as LOFAR Array in the example, can support signal-token spending. A card that merely marks signals, such as the Very Large Array example, does not become a Scan because its result looks similar.

Advanced planning exercise: look at the existing row before committing. Identify which of its cards supplies the sectors you need, which sector would close, and whether the additional data will overflow your pool. Then compare spending one token with spending two. Maximum spending is not automatically maximum value.

We checked the original English expansion rulebook's printed setup and signal examples, rather than relying on an abbreviated product listing. This matters because automated PDF extraction can lose icons or misread small illustrated card text. The native printed examples control.

In Tom Vasel's 21 November 2025 Space Agencies review, he strongly favors the asymmetric organizations and more developed opening. His enthusiasm is useful evidence about what the expansion changes: you can begin with a recognizable specialty rather than the same broad starting position.

That is his assessment, not our test score or proof that every first-time player needs the expansion. He also considers how a new player might receive the added asymmetry. We treat that uncertainty seriously: additional personality can make choices more interesting and add another thing to learn.

The video includes commercial disclosures associated with the channel. A disclosed sponsor or affiliate route is a research lead, not independent evidence that an accessory is essential. We verify contents and rules against CGE before turning a review observation into advice.

Our recommendation separates two readers. A new owner should understand a complete probe mission and the scan–analyze loop in the base game first. An owner who already enjoys that economy has a clear reason to consider Space Agencies: different organizations and opening states create new planning problems.

If you dislike allocating scarce resources over several turns, more organizations will not necessarily fix the underlying fit. The beautiful science theme cannot substitute for enjoying the engine beneath it.

The base box is the first functional purchase. Space Agencies is the content upgrade for an owner ready to change the opening. CGE's upgraded components are a separate material choice: metal credits and acrylic energy make the resource handling look and feel different, without providing an advantage in the rules.

A compatible organizer can earn its cost if it demonstrably handles your exact base-plus-expansion collection and the sleeves you actually use. Do not assume an insert designed before the expansion fits everything, and do not describe a shipping-carton measurement as the box's usable interior.

Likewise, a decorative space object is not a SETI expansion. If it appears in a collector's corner, label the role honestly and keep the playable purchases ahead of it. Expensive accessories belong here only when their specific benefit is clearer than 'premium.'

Current affiliate buttons must identify the exact language and unit. The English base game had new purchase options during our check, accessed through Amazon's buying-options panel rather than a default featured offer. That is different from sold out. We did not establish an exact English US offer for every expansion or component upgrade, so an official reference is more honest than a misleading Buy button.

Stop buying when the planned next session is complete. A good second game with the components already owned is a stronger upgrade than another unopened box.

Before the first turn, decide whether you are using the normal five-round base setup or the four-round organization setup. Use the matching instructions, including starting resources. Keep the quick reference nearby and leave unrevealed alien sheets alone until discovery calls for them.

During play, announce the main action, pay its complete cost and resolve any free actions within your own turn. Research rotates before choosing a technology. The first player to pass rotates the system even in the last round. Gold milestones and alien discoveries are resolved at their specified between-turn timing, not halfway through an unresolved action.

For your post-game conversation, choose one unfinished plan. Did a probe run out of energy? Did data overflow? Did a project arrive too late to trigger? That diagnosis produces a useful second-session goal without pretending there is one correct opening hand.

Margo's final buying advice is the same as her first turn: fund a mission you can complete. Learn the complete base game, add asymmetry when it has a clear purpose, and keep optional luxury separate from necessary play.