How many players is Approximately Up co-op?
Up to four players online per the Steam feature list, plus full solo play.
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This Approximately Up co-op page separates the confirmed build → wire → fly → land loop from details that still need a current-build check. Approximately Up starts on Earth. Build modular ships in the garage, route Power and Data cables, fly first-person from inside your craft, land on Planet Stations to unlock permanent launch points, and complete delivery missions to unlock new components. Solo or up to four-player co-op on Steam. Use it as a garage-side reference, not as a promise that every unlisted binding, wattage, or thruster limit matches every patch.
The practical goal is simple: make one safer ship decision at a time, keep Power and Data intact after a crash, and turn a successful landing into a permanent Planet Station unlock. When a result is uncertain, rebuild near Earth and compare notes after you recover.
| Fact | Detail |
|---|---|
| Platform | Steam PC |
| Mode | Solo or up to 4-player co-op |
| Core setting | Earth start · ~15 unique planets · Planet Stations |
| Topic | Co-op |
| Player count | Solo or online co-op up to 4 (Steam) |
| Shared asset | One modular ship — wiring and flight are communal |
| Roles | Pilot · engineer · navigator · mission/payload — not formal classes |
| Recovery | Time Rewind exists; agree when to rewind vs rebuild |
| Source boundary | Steam listing and current player-observed guidance; unconfirmed details are marked TBA |
Steam lists solo play and online co-op for up to four players on one modular craft. The fun is shared building and first-person chaos; the failure mode is four people deleting the same Power run. Decide who may touch cables, who pilots, and when the crew rewinds before you leave Earth.
The reliable foundation is the same whether you fly solo or with a crew: start on Earth, bolt modular frames and thrusters, route Power cables for energy and Data cables for control signals, then pilot first-person from the deck. A ship that looks finished but has a dead battery or a missing Data path will not fly the way you designed it. That is why co-op advice should start with ports, orientation, and a recoverable garage test rather than with a supposed optimal mega-build.

A useful first flight tells you what failed: an unpowered thruster, a reversed Data port, an atmospheric thruster used in vacuum, or an RCS battery that died mid-roll. It does not automatically tell you to enlarge the hull. Pause long enough to name the failure, fix the circuit, and decide whether the next test can stay near the pad.
This avoids a common early failure: the crew launches a huge Workshop import, crashes far from Earth, and then cannot tell whether the problem was mass, wiring, or thruster type. If the current craft becomes confusing, a smaller rebuild that lands once is a successful session rather than a wasted attempt.
In co-op, say the subsystem, the symptom, and the intended fix: “RCS pitch dead, battery empty, swap cell,” is more useful than a long description. Solo players can apply the same discipline as a mental checklist. The game rewards decisions that leave you a second option when the first thruster bank fails.
With that baseline in place, the next question is not “can we fly farther?” but “what does continuing cost if the circuit fails again?”
Co-op decisions are communication decisions. A correct thruster facing still fails if the engineer drains the RCS cell while the pilot rolls for a screenshot.
Use the table as a decision aid, not a hidden-stat calculator. Approximately Up has large modular ships and evolving community knowledge, so a precise number without an in-game check is less useful than a conservative threshold: protect a working circuit when recovery is uncertain, and test risky ideas only when you can still rebuild from a known station.

| Situation | Action | Why it is safer |
|---|---|---|
| Cable ownership | One engineer owns Power; announce before deleting a run | Parallel edits orphan thrusters |
| Pilot authority | Pilot calls attitude and when to cut main thrust | Split stick inputs fight landings |
| Battery budget | Engineer reports cells before Moon or mission approaches | Silent brownouts look like griefing |
| Rewind vs rebuild | Agree a trigger (“dead pitch” / “lost station”) before launch | Arguments mid-crash waste the learning |
Deleting a long cable run, launching with disposable batteries near empty, or committing to a Moon approach with no RCS reserve can remove options. Before doing any of those, confirm what the ship keeps if the attempt fails. If the answer is “a dead hull with no station unlock,” choose the reversible option first: rewire, test hover near the pad, or land at a closer Planet Station.
That same habit makes progress steadier. One secure station unlock can change every later rebuild; a speculative crash often repeats the same first minutes with no new parts.
Matched by build plan, shared topics, and guide progression — not random related links.
The game does not ship formal classes. Useful crew roles are jobs on one hull: a pilot for translation and attitude, an engineer for Power/Data and batteries, a navigator for Radar scale and targets, and a mission operator for payloads, sheep, or timed cargo. Swap jobs when the ship is docked, not during a vacuum coast.
Avoid turning a single player report into a universal rule. A report can be valuable evidence of a wiring pattern, yet it may come from a particular unlock state, thruster mix, or patch. Record the context before copying it: which planet, which thruster types, whether Power and Data both reached the block, and whether the result was repeated after a rebuild.

Owns joysticks, main thrusters, and “cut thrust / reverse now” calls. Avoids casual rolls that empty RCS.
The useful follow-up is to connect this observation to the broader loop: does it make launch safer, reduce wiring confusion, change the Moon approach, or simply create a new risk? If it does not answer one of those questions, do not let it pull you into a larger hull before the current circuit works.
Owns routers, cells, and which thruster banks are live. Speaks in subsystem + symptom + fix.
The useful follow-up is to connect this observation to the broader loop: does it make launch safer, reduce wiring confusion, change the Moon approach, or simply create a new risk? If it does not answer one of those questions, do not let it pull you into a larger hull before the current circuit works.
Owns cargo straps, timed objectives, and “do not sightseeing” reminders.
The useful follow-up is to connect this observation to the broader loop: does it make launch safer, reduce wiring confusion, change the Moon approach, or simply create a new risk? If it does not answer one of those questions, do not let it pull you into a larger hull before the current circuit works.
Rewind is a learning net, not a personality. Use it when a wiring mistake is obvious and the lesson is already named. Rebuild when the hull is confusing, when unlocks matter more than the current wreck, or when the crew is chasing No Rewinds! / Golden Thruster style goals later.
A conservative guide is especially important while the live knowledge base is still growing. The Steam description confirms the broad systems—modular frames, Power and Data cables, atmospheric and electric thrusters, Planet Stations, missions that unlock parts, and up to four-player co-op—but it does not publish a complete numerical database for every block. Tables on this site therefore distinguish a confirmed loop from TBA details instead of filling gaps with invented wattages.
Meme windows are fine after a station unlock; they are expensive when the only garage is Earth and batteries are empty.
If the observed result matters to your next flight, verify it again after a patch or compare it with a concise report in the community. Keep the claim narrow: “this happened with this thruster layout” is more useful and more durable than a broad claim about every ship.
When using Discord, state player count, planet, and whether you need an engineer or a pilot — not only “anyone wanna fly.”
If the observed result matters to your next flight, verify it again after a patch or compare it with a concise report in the community. Keep the claim narrow: “this happened with this thruster layout” is more useful and more durable than a broad claim about every ship.
Check the current build before treating a named binding, numerical power draw, channel name, exact thruster limit, or complete part roster as settled. The official Steam page is the source for the game’s core premise and player count; the verified Discord is the best route for patch-sensitive questions. Do not use copied invite links or anonymous “full databases” as authority.
Up to four players online per the Steam feature list, plus full solo play.
Physically yes, but assign cable ownership. Parallel Power edits are a top co-op failure mode.
Use it while learning. Long term, stable circuits and station unlocks beat repeated rewinds — and some achievements reward no rewinds.
No. This guide labels build-specific values, full part rosters, and unverified names as TBA rather than guessing.
Next: tips. It continues the decision from this page into the part of the loop that keeps your next flight recoverable.
Matched by build plan, shared topics, and guide progression — not random related links.