Online co-op Collectathon games

Every online co-op Collectathon game on Steam we know of, newest first. Add tags or a price band to narrow it down.

Showing 21–30 of 178 games matching Collectathon · updated 12 Oct 2026

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Released
Price
$ · Cheap
Players
👥 Up to 6 players
Reviews
100% of 1

Twister City is an online co-op game featuring proximity chat, where you and up to 5 friends try to survive in a city plagued by tornadoes. Collect debris to research for points and unlock new items and upgrades that will hopefully increase your chances to survive Twister City.

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$
Released
Price
$ · Cheap
Players
👥 Up to 4 players
Reviews
97% of 151

A game about organizing, stacking and remembering where you put hundreds of books in a cozy-creepy medieval library. Play solo or with up to three fellow monks.

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Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
91% of 517

Megastore: Tidy Up Together is a cozy sorting game for solo or online co-op play. Organize four stores of increasing scale: a Toy Store, an Electronics Store, a bustling Supermarket, and a massive two-story Megastore. Pick up, sort, and shelve thousands of items, and get ready to open!

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
51% of 56

Sort over 1,600 adorable plushies across 90+ shelves in one enormous store. Organize freely in Relaxed Mode, or figure out where every plushy belongs in Challenge Mode while unlocking useful abilities

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
100% of 1

Fantasy Waifu Collector is an exciting game about collecting "Waifu" in order to build an army to build a town and restore the world from decay! Players will recruit many different characters as they explore a fascinating world filled with monsters. Defeat the Demon King to win, right?

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$$
Released
Price
$$ · Standard
Players
👥 1–6 players

A sandbox survival crafting collectathon for 1-6 players set in an endless series of interconnected floating islands that are a mix of hand crafted and procedurally generated voxel environments.

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 1–4 players

Backrooms: The Endless Halls is a cooperative horror game for 1–4 players. On your own or with friends, you’ll dive into an unknown world where everything will seem familiar to you, yet at the same time frightening and very confusing. Try to make it out alive, if that’s even possible...

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$$
Released
Price
$$ · Standard
Players
👥 Up to 4 players
Reviews
68% of 449

You're the last remaining video rental store. From humble VHS clerk to rental racketeer - run your video store and explore Reshoot Springs, building an underground empire. Expand with upgrades, side hustles, store membership, and more. Whatever it takes to survive - solo or in up to 4-player co-op.

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
70% of 333

Shelve the products, unlock new skills, and use your unique methods to tidy up the mall. Enjoy the online co-op and online PvP with your friends, or go solo! Fill up the shelves and experience a sense of relief and satisfaction.

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
48% of 27

An open-world sandbox survival game set after a devastating alien invasion. Scavenge for resources, craft, build defenses, and harness alien technology to fight back. Play solo or in co-op and reclaim what’s left of the planet.

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