- Steam pricePrice
- $29.99
- Release
- February 5, 2019
- Modes
- Platforms
How co-op works
Up to four online players join one host’s solar system and share bases, resources, research, vehicles, and automation. They reshape terrain together, split exploration and production tasks, and extend oxygen and power networks to support expeditions above and below each planet.
About this game
ASTRONEER drops you on the surface of a colorful, low-poly planet with a terrain deformation tool and an endless sense of curiosity. This is true cooperative exploration and base-building, where you and up to three friends carve tunnels, flatten landing pads, and gather resources to power an ever-expanding operation across multiple alien worlds.
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The core loop revolves around gathering raw materials, researching new technology, and automating production lines with conveyors, smelters, and power grids. Terraforming itself becomes a creative puzzle: you can dig down to hidden caves, sculpt ramps to reach mountain peaks, or reshape entire valleys. Working together speeds up every task and makes ambitious projects feel achievable.
Online co-op lets you jump into a friend's save or host your own solar system. Sessions turn into communal engineering efforts, where one player might lay power cables while another scouts a distant biome for rare elements. Voice chat is practically essential when you are coordinating oxygen tethers deep underground or troubleshooting a base during a dust storm.
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Frequently Asked Questions
How many players can explore together in ASTRONEER?
Up to four players total can work together in online co-op. You can either join a friend's existing save or host your own solar system for others to join.
Can we join each other's progress mid-game, or do we need to start fresh?
You can jump into a friend's existing save at any time-you don't need to start over. One player hosts the solar system, and others can join that ongoing session to continue building and exploring together.
Is voice chat important for playing co-op?
Yes, voice chat is practically essential. Coordinating oxygen tethers underground, laying power grids, and scouting distant biomes all benefit from real-time communication, especially when you're spread across different parts of a planet.
What does terraforming actually let us do together?
You can reshape the terrain like clay-dig tunnels to underground caves, flatten ground for landing pads, sculpt ramps up mountains, or carve out entire valleys. Working together makes large-scale projects much faster and opens up creative engineering possibilities.