Co-op sandbox and factory games
Steam data, rebuilt 2026-09-11
Building, automating and hoarding together, where the real content is arguing about whose part of the base is the ugly one.
13 in the catalog · 3 under $10 · median Steam score 89% · busiest right now — Terraria, 42 716
The list — 13
Terraria
Two decades of content and the best drop-in co-op in 2D.
Overwhelmingly Positive 97%
$9.99
Satisfactory
First-person factories where someone always builds the ugly one.
Overwhelmingly Positive 97%
$39.99
No Man's Sky
An entire galaxy, best used as a place to meet friends.
Very Positive 85%
$59.99$23.99
Factorio
The factory must grow, and it grows faster with four people.
Overwhelmingly Positive 98%
$35.00
Teardown
Demolish a building however you like, with up to twelve accomplices.
Overwhelmingly Positive 96%
$29.99
ASTRONEER
Soft, colourful planets and a shared base with no roof.
Very Positive 92%
$29.99
Space Engineers
Ships you build yourself, and the physics that punish it.
Very Positive 89%
$19.99
Necesse
Terraria-shaped survival; a dedicated server holds far more than a party.
Very Positive 93%
$14.99
Ore Factory Squad ⛏️
Mining and conveyor belts run by four people who disagree.
Very Positive 89%
$12.99$9.48
Portal Knights
Blocky action RPG for four, or two on a split screen.
Very Positive 83%
$19.99$2.99
FOUNDRY
Voxel factory building where the belts are the conversation.
Very Positive 81%
$29.99
Craftopia
Every genre at once, and somehow it works with friends.
Mostly Positive 76%
$24.99
Techtonica
Underground automation with a co-op that actually works.
Mixed 65%
$29.99
How this list is put together
Everything here comes from Steam on the last rebuild: co-op modes, prices, review scores and the number of people playing at that moment. Nothing is ranked by hand — the only hand-written part is the one line explaining what each game is.
