Single-player games like Cosmic Osmo and the Worlds Beyond the Mackerel
Below are 17 single-player Steam games similar to Cosmic Osmo and the Worlds Beyond the Mackerel, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Cosmic Osmo and the Worlds Beyond the Mackerel page.
Ranked picks
- 1
Elroy and the Aliens
Single-player alternative to Cosmic Osmo and the Worlds Beyond the Mackerel — playable solo, no multiplayer required. Shares Adventure with Cosmic Osmo and the Worlds Beyond the Mackerel.
Slope City, 1993. Talking robots, ancient alien secrets, and a mysterious message from the past. Follow Elroy and Peggie through a portal to find Elroy's father, missing for 18 years. A heartfelt point & click adventure where the puzzles make sense and the story stays with you.
- 2
Obduction
Single-player alternative to Cosmic Osmo and the Worlds Beyond the Mackerel — playable solo, no multiplayer required. Shares Adventure with Cosmic Osmo and the Worlds Beyond the Mackerel.
A new sci-fi adventure from Cyan, the creators of Myst. Abducted far across the universe, you find yourself on a broken alien landscape with odd pieces of Earth. Explore, uncover, solve, and find a way to make it home.
- 3
The Norwood Suite
Single-player alternative to Cosmic Osmo and the Worlds Beyond the Mackerel — playable solo, no multiplayer required. Shares Adventure and Casual with Cosmic Osmo and the Worlds Beyond the Mackerel.
Explore the mysterious Hotel Norwood in this surreal first-person adventure. Curious characters, forgotten secrets, and head-nodding music await your arrival.
- 4
Myst: Masterpiece Edition
Single-player alternative to Cosmic Osmo and the Worlds Beyond the Mackerel — playable solo, no multiplayer required. Shares Adventure and Casual with Cosmic Osmo and the Worlds Beyond the Mackerel.
The classic Myst experience with point and click controls, released as a remaster to the original in 2000. Enter a world where nothing is as it seems... and adventure knows no bounds!
- 5
Frog Detective 3: Corruption at Cowboy County
Single-player alternative to Cosmic Osmo and the Worlds Beyond the Mackerel — playable solo, no multiplayer required. Shares Adventure and Casual with Cosmic Osmo and the Worlds Beyond the Mackerel.
You're a detective, and a frog, and it's time to solve a mystery in the wild west.
- 6
The Tiny Bang Story
Single-player alternative to Cosmic Osmo and the Worlds Beyond the Mackerel — playable solo, no multiplayer required. Shares Adventure and Casual with Cosmic Osmo and the Worlds Beyond the Mackerel.
Life on Tiny Planet was calm and carefree until a great disaster occurred - Tiny Planet was hit by a meteor! The world fell apart and now its future depends only on you! Use your imagination and creativity: in order to restore Tiny Planet and help its inhabitants you will have to fix a variety of machines and mechanisms as well as solve...
- 7
Lucy Dreaming
Single-player alternative to Cosmic Osmo and the Worlds Beyond the Mackerel — playable solo, no multiplayer required. Shares Adventure with Cosmic Osmo and the Worlds Beyond the Mackerel.
Discover a dark family secret and rid a young girl of her nightmares in this splendidly British point & click comedy adventure. Playing as sharp-witted Lucy, explore both dreams and reality to meet all the colourful characters who'll help you solve puzzles, gather clues and find a murderer.
- 8
Willy Morgan and the Curse of Bone Town
Single-player alternative to Cosmic Osmo and the Worlds Beyond the Mackerel — playable solo, no multiplayer required. Shares Adventure with Cosmic Osmo and the Worlds Beyond the Mackerel.
A letter from 10 years ago, an intricate web of lies to unravel and a mystery to solve. Explore an unconventional town of pirates, dive into the past, collect items and look for clues to help Willy find out what happened to his father...
- 9
Myst
Single-player alternative to Cosmic Osmo and the Worlds Beyond the Mackerel — playable solo, no multiplayer required. Shares Adventure and Casual with Cosmic Osmo and the Worlds Beyond the Mackerel.
Welcome to Myst: a starkly beautiful island, eerily tinged with mystery and shrouded in intrigue. Built from the ground up to play in 2D & VR, explore Myst in a whole new dimension! Journey to the Ages, unravel puzzles, and be a part of the surrealistic adventure that will become your own.
- 10
The Manhole: Masterpiece Edition
Single-player alternative to Cosmic Osmo and the Worlds Beyond the Mackerel — playable solo, no multiplayer required. Shares Adventure and Casual with Cosmic Osmo and the Worlds Beyond the Mackerel.
In 1988 you met Mr. Rabbit and a host of his friends in the World of the Manhole. Your friends are still here, but they've done some remodeling. Prepare for a grand adventure in the world of the Manhole Masterpiece Edition. A world of epic wonder and whimsical magic.
- 11
Spelunx and the Caves of Mr. Seudo
Single-player alternative to Cosmic Osmo and the Worlds Beyond the Mackerel — playable solo, no multiplayer required. Shares Adventure and Casual with Cosmic Osmo and the Worlds Beyond the Mackerel.
Professor Spelunx and Mr. Seudo are studying Planet X, a place full of mystery and adventure. There's a surprise around every turn, a huge world to explore and dozens of mini-games to enjoy. Spelunx and the Caves of Mr.
- 12
Riven
Single-player alternative to Cosmic Osmo and the Worlds Beyond the Mackerel — playable solo, no multiplayer required. Shares Adventure and Casual with Cosmic Osmo and the Worlds Beyond the Mackerel.
Uncover a story of intrigue, betrayal, and a civilization teetering on the brink of collapse as you solve intricate puzzles to unlock the secrets of Riven. Built from the ground-up and expanded from the award-winning original game released in 1997.
- 13
realMyst: Masterpiece Edition
Single-player alternative to Cosmic Osmo and the Worlds Beyond the Mackerel — playable solo, no multiplayer required. Shares Adventure with Cosmic Osmo and the Worlds Beyond the Mackerel.
Released in 2014, experience one of the first 3D adaptations of the renowned puzzle-adventure game Myst! Each discovery you make, every puzzle you solve, will bring you closer to reversing a wrong that has gone unchecked for ages.
- 14
Riven (1997)
Single-player alternative to Cosmic Osmo and the Worlds Beyond the Mackerel — playable solo, no multiplayer required. Shares Adventure and Casual with Cosmic Osmo and the Worlds Beyond the Mackerel.
Released in 1997 as the original sequel to Myst, one of the best-selling puzzle adventure games of all time. Prepare to enter a world "torn asunder" by timeless, unresolved conflicts -- a world of incomparable beauty, intrigue, and betrayal.
- 15
Firmament
Single-player alternative to Cosmic Osmo and the Worlds Beyond the Mackerel — playable solo, no multiplayer required. Shares Adventure with Cosmic Osmo and the Worlds Beyond the Mackerel.
Firmament is a new puzzle-adventure game by the legendary game studio behind the best-selling games Myst and Riven. Featuring deep storytelling and world-building, discover the story of this seemingly abandoned world as you explore and unlock the mysteries of 3 unique Realms… and beyond!
- 16
Myst III: Exile
Single-player alternative to Cosmic Osmo and the Worlds Beyond the Mackerel — playable solo, no multiplayer required. Shares Adventure and Casual with Cosmic Osmo and the Worlds Beyond the Mackerel.
The story of Myst continues in this third entry of the series, originally released in 2001. Return to this strange and wondrous universe, where books become portals into worlds, and where the lessons of the past may yet hold meaning for today...
- 17
Myst V: End of Ages
Single-player alternative to Cosmic Osmo and the Worlds Beyond the Mackerel — playable solo, no multiplayer required. Shares Adventure and Casual with Cosmic Osmo and the Worlds Beyond the Mackerel.
The Grand Finale of the greatest adventure! Decide the fate of a civilization in this triumphant final chapter to the Myst saga. Embark on an epic journey into the heart of a shattered empire as the only explorer who can still save it— or destroy it with the wrong choices.