11 / CO-OP / FLIGHT NOTE

QUERY approximately up multiplayer co op

Approximately Up Multiplayer Guide: Confirmed Limits

OFFICIAL CORE

DIRECT ANSWER

Approximately Up officially supports online co-op for up to four players. Keep every player on the same game version; dedicated servers, host migration, and how mission progress carries between a friend's game and your save were not confirmed in the checked sources.

Maximum
up to 4 players
Play mode
online co-op
Version mismatch
message added in 1.0.005

CO-OP STATUS / EDITORIAL

Known group facts versus open questions.

The matrix separates store-backed support from networking details the sources do not establish.

Known group facts versus open questions.
PLAYERSup to four
MODEonline co-op
VERSION MATCHrequired; message exists
DEDICATED SERVERnot confirmed
HOST MIGRATIONnot confirmed
FRIEND PROGRESSIONnot confirmed

Source: Official Steam store

FLIGHT NOTE / CHECKED 2026-08-09 / NO PERSONAL PLAYTEST CLAIM

Why this page exists: A group wants the confirmed player limit and the boundary around progression and hosting.

Prepare the session

Use the official ceiling of four and update everyone before troubleshooting a failed join. Version 1.0.005 specifically added a version-mismatch message for multiplayer, which makes inconsistent builds the first documented check.

The store also exposes multiplayer and online co-op categories. It does not explain a dedicated-server workflow or promise that a guest's mission completion transfers to another save.

Keep unknown networking details unknown

Community threads prove players ask about dedicated servers and progression in a friend's game. Until the developer documents those behaviors or a controlled test records them, this site does not turn assumptions into features.