Most Played Collectathon Games on Steam
Take a look at the top collectathon games that are currently attracting the largest player bases on the Steam platform, as of July 31st 2025. Want to explore even more collectathon titles available on Steam? Explore the complete list of the best collectathon games.
Lists & Categories
1. TCG Card Shop Simulator
Open your own local game store. Stock shelves with the latest booster packs, or crack them and collect the cards for yourself. Set your own prices, hire staff, host events, and expand your card shop. TCG Card Shop Simulator is a game developed and published by . Released on September 15th 2024 has received 39,499 reviews of which 38,392 were positive and 1,107 were negative resulting in an impressive rating of 9.5 out of 10. The game has hit the top spot as the #1 most played collectathon game, thanks to its 1,910 peak concurrent players over the last day.
9.5
38,392
1,107
1,910
players
2. Tiny Aquarium: Social Fishkeeping
A happy aquarium that lives at the bottom of your screen! Tiny Aquarium is a social idle simulator that keeps growing, even when offline. Hatch, sell fish, decorate, go fishin’, and visit your friends’ aquariums with bite-sized daily sessions. Tiny Aquarium: Social Fishkeeping is a game developed and published by . Released on June 23rd 2025 has received 1,299 reviews of which 1,250 were positive and 49 were negative resulting in an impressive rating of 9.1 out of 10. While seeing 533 players online at once in the last 24 hours, this game is currently ranked #2 among collectathon games based on player count.
9.1
1,250
49
533
players
3. Isles of Sea and Sky
A fantastic, oceanic, open world puzzle adventure. Solve innovative block puzzles while unearthing a mystifying story, gaining new friends that change the puzzle landscape, and unlocking powers that provide more options for how you choose to progress through the enigmatic Isles of Sea and Sky. Isles of Sea and Sky is a game developed and published by . Released on May 22nd 2024 has received 1,003 reviews of which 942 were positive and 61 were negative resulting in a rating of 8.8 out of 10. While seeing 238 players online at once in the last 24 hours, this game is currently ranked #3 among collectathon games based on player count.
8.8
942
61
238
players
4. A Hat in Time
A Hat in Time is a cute-as-heck 3D platformer featuring a little girl who stitches hats for wicked powers! Freely explore giant worlds and recover Time Pieces to travel to new heights! A Hat in Time is a game developed and published by . Released on October 05th 2017 has received 51,687 reviews of which 50,577 were positive and 1,110 were negative resulting in an impressive rating of 9.6 out of 10. With 188 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played collectathon games.
9.6
50,577
1,110
188
players
5. Supercar Collection Simulator
Start your own diecast store! Unbox surprise car packs, expand your collection, oin exciting races with customers on the tracks, and play online trading games. A world full of speed and excitement is waiting for you in your store! Supercar Collection Simulator is a game developed and published by . Released on April 14th 2025 has received 711 reviews of which 641 were positive and 70 were negative resulting in a rating of 8.5 out of 10. With 168 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played collectathon games.
8.5
641
70
168
players
6. Placid Plastic Duck Simulator
The ultimate high-tech rubber duck simulation, Placid Plastic Duck brings you dangerous levels of relaxation. With chill music, dreamy 3D graphics, and many different happy ducks, your only priority is to float around. Zero Ducks given. Placid Plastic Duck Simulator is a game developed and published by . Released on July 06th 2022 has received 17,685 reviews of which 17,302 were positive and 383 were negative resulting in an impressive rating of 9.5 out of 10. With 147 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played collectathon games.
9.5
17,302
383
147
players
7. Cozy Grove
Welcome to Cozy Grove, a game about camping on a haunted, ever-changing island. As a Spirit Scout, you'll wander the island's forest each day, finding new hidden secrets and helping soothe the local ghosts. With a little time and a lot of crafting, you'll bring color and joy back to Cozy Grove! Cozy Grove is a game developed and published by . Released on April 07th 2021 has received 7,998 reviews of which 7,203 were positive and 795 were negative resulting in a rating of 8.7 out of 10. With 128 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played collectathon games.
8.7
7,203
795
128
players
8. Coromon
Coromon is a modern take on the classic monster-taming genre. Tame Coromon and explore a vast world filled with thrilling turn-based battles, brain-twisting puzzles, and a mysterious threat to the world awaiting defeat. Nobody said being a Battle Researcher was easy! Coromon is a game developed and published by . Released on March 31st 2022 has received 6,682 reviews of which 5,703 were positive and 979 were negative resulting in a rating of 8.3 out of 10. With 123 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played collectathon games.
8.3
5,703
979
123
players
9. Card Shop Simulator Multiplayer
You and your friends are going to compete to see whose card shop can earn more money! Starting from a humble little shop, decorate your store, hire staff, formulate marketing strategies. Finally, use the coolest cards to engage in card battles, and win away your friends' precious cards! Card Shop Simulator Multiplayer is a game developed and published by . Released on June 17th 2025 has received 645 reviews of which 547 were positive and 98 were negative resulting in a rating of 8.0 out of 10. The game currently holds the #9 spot among the most played collectathon games.
8.0
547
98
93
players
10. Siralim Ultimate
Siralim Ultimate is a monster-catching, dungeon-crawling RPG with a ridiculous amount of depth. Summon over 1200 different creatures and travel through randomly generated dungeons to acquire resources, new creatures, and loot. Siralim Ultimate is a game developed and published by . Released on December 03rd 2021 has received 2,021 reviews of which 1,908 were positive and 113 were negative resulting in a rating of 9.0 out of 10. The game currently holds the #10 spot among the most played collectathon games.
9.0
1,908
113
74
players
More Collectathon & Related Games
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