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 121–130 of 178 games matching Collectathon · updated 12 Oct 2026

Filters: Collectathon × Clear all
$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
92% of 28

Fish-Click Squad! is a casual multiplayer idler where you purchase various aquatic creatures and nurture them to maturity with your friends through clicking and touching earning coins and rewards to unlock more fish and idle features! There is nothing happier than slacking with friends!

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
62% of 8

Open Fishing 2 is a chill open world fishing game. Fill out a book with 115 fish species, meet friendly fish gods, sail the oceans with your boat, cook, draw your own map, and enjoy fishing without worries.

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Up to 4 players
Reviews
96% of 943

You’re a wizard! And a secret agent. The evil S.P.I.D.E.R crime syndicate has taken over your school, creating chaos. Play solo or up to 4 player co-op as you duel students, discover ancient secrets, and use scandalous spells.

If you loved these, you'll love this

$$
Released
Price
$$ · Standard
Players
👥 Not stated

一款3D卡牌动物合成游戏,战斗胜利后获得奇异蛋,孵化获得奇异动物。 合成规律:玩家所选择的宠物,与击败的宠物,生成奇异蛋。 元素:不同元素不同效果,将影响游戏战斗方式。 升级:根据宠物成长属性,获得成长。 融合:根据宠物与需要融合宠物,生成新的宠物。 阵亡:拥有其他宠物阵亡,选择新宠物,如没有其他宠物,则会重生。 孵化:奇异蛋孵化时间与宠物数量有关。 开启奇异蛋:孵化未结束,不要拾取,会失败。孵化期间,其他玩家会抢夺奇异蛋,注意保护。 奇异蛋产生:战败宠物,出现奇异蛋,根据战败动物,决定奇异蛋类型。 召唤古神:寻找召唤神,神化,根据神化数量,古神降临,战败古神,获得奖励。 诸神之战、神王之战

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Up to 16 players
Reviews
94% of 55

Unaccessible is a third-person wheelchair platformer about struggling to get a health insurance claim approved on a mysterious island without accessibility ramps. Tackle stairs, climb obstacles and hop your way through the pain of the claims approval process.

If you loved these, you'll love this

Free
Released
Price
Free
Players
👥 Up to 8 players
Reviews
73% of 15

4 teams. 12 minutes. One rule: GET RICH or go home. Choose a Seeker, build your empire, loot enemies, and destroy their economy before the clock runs out. Relax with hilarious mini-games for up to 8 friends when the chaos gets too real.

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
80% of 180

Dive into Fantasy Online 2, a rich 2D pixel art MMORPG full of adventure. Master diverse skills, join a guild, explore pixelated zones, and engage in simple fun mmorpg combat. Hundreds of items are waiting for you to collect across 4 characters! Join the fun today!

$
Released
Price
$ · Cheap
Players
👥 Up to 8 players
Reviews
86% of 849

Build your own Super Mining Mech and explore the underground in search of new natural resources. Customize your mech with unlockable parts to dig deeper than ever - by yourself or with up to 7 friends in online co-op multiplayer! So, what are you waiting for? There’s mining to be done!

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
80% of 10

After an accident, your ship crashes on an unknown island, a convergence point between worlds. Explore impossible landscapes, overcome traps and puzzles, recover the lost Loops, and see if you can find the legendary Golden Loop in this 3D platforming narrative adventure.

If you loved these, you'll love this