Single-player games like Cosmo's Cosmic Adventure
Below are 16 single-player Steam games similar to Cosmo's Cosmic Adventure, 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 Cosmo's Cosmic Adventure page.
Ranked picks
- 1
Hocus Pocus
Single-player alternative to Cosmo's Cosmic Adventure — playable solo, no multiplayer required. Shares Action and Adventure with Cosmo's Cosmic Adventure.
Terexin, leader of the Council of Wizards, is sending the young sorcerer, Hocus, on a special mission to prove his worthiness.
- 2
Realms of Chaos
Single-player alternative to Cosmo's Cosmic Adventure — playable solo, no multiplayer required. Shares Action and Adventure with Cosmo's Cosmic Adventure.
Realms of Chaos is an exciting side-scrolling platform game with an innovative mix of action, adventure, mysticism, and role-playing that's never been seen in this style of game. Set in the fantastic world of Mysteria, Realms of Chaos is the first of many adventures of Endrick and Elandra, a brother and sister duo who find themselves on...
- 3
Secret Agent
Single-player alternative to Cosmo's Cosmic Adventure — playable solo, no multiplayer required. Shares Action with Cosmo's Cosmic Adventure.
You are agent 006 - top agent of the government's secret organization committed to protecting the world against terrorists and power-mad criminals. Your mission: to parachute into a high -security island outpost and secure the plans to the ultimate satellite laser weapon, which was recently stolen from the government.
- 4
Paganitzu
Single-player alternative to Cosmo's Cosmic Adventure — playable solo, no multiplayer required. Shares Action and Adventure with Cosmo's Cosmic Adventure.
Journey into an Aztec pyramid and survive the adventure of a lifetime! No other game forces you to die in order to complete it! That's just one of many incredible plot twists in this excellent puzzle-oriented arcade-adventure game. Guide Alabama Smith (Al) into a vast and dangerous Aztec pyramid.
- 5
Monster Bash
Single-player alternative to Cosmo's Cosmic Adventure — playable solo, no multiplayer required. Shares Action with Cosmo's Cosmic Adventure.
Johnny Dash's bash 'em and smash 'em adventure takes him into the evil Under World of Count Chuck. The story starts when Johnny's dog Tex is kidnapped by the Count, along with hundreds of other pet dogs and cats.
- 6
Math Rescue
Single-player alternative to Cosmo's Cosmic Adventure — playable solo, no multiplayer required. Shares Adventure with Cosmo's Cosmic Adventure.
A bone-chilling crisis has struck the world! Reports are pouring in from all corners of the globe: Missing numbers! Drivers on streets are in dangerous peril because the speed limit signs have gone blank! On Wall Street, stockbrokers are throwing up their hands in despair. The Dow Jones isn't down, and it isn't up - it's gone!
- 7
Mystic Towers
Single-player alternative to Cosmo's Cosmic Adventure — playable solo, no multiplayer required. Shares Action and Adventure with Cosmo's Cosmic Adventure.
As Baron Baldric, you’re charged with keeping the peace for the common folk of the land. But when the grand Lazarine Towers are overcome by dark forces, you must wield your magical staff and set out to make things right. A love and affable character, Baldric will win your heart with his mannerisms and charm.
- 8
Freedom Planet 2
Single-player alternative to Cosmo's Cosmic Adventure — playable solo, no multiplayer required. Shares Action and Adventure with Cosmo's Cosmic Adventure.
The fast paced platforming of Freedom Planet returns! Become a full-time cartoon heroine and use abilities and items suited to your play style to explore the world of Avalice and defend its animal citizens!
- 9
Wolfenstein 3D
Single-player alternative to Cosmo's Cosmic Adventure — playable solo, no multiplayer required. Shares Action with Cosmo's Cosmic Adventure.
World War II rages. The Nazis are planning to build an unstoppable, mutant army. On a mission to steal the secret plans, you were captured and imprisoned. Now, a lucky break gives you the chance to escape, but a maze of passages and trigger-happy Nazis stand in your way.
- 10
Commander Keen
Single-player alternative to Cosmo's Cosmic Adventure — playable solo, no multiplayer required. Shares Action with Cosmo's Cosmic Adventure.
Commander Keen: Invasion of the Vorticons: Episode 1: Marooned on Mars (Dec. 14th 1990) Episode 2: The Earth Explodes (1991) Episode 3: Keen Must Die! (1991) Commander Keen's very first adventure, and the debut of id's groundbreaking side-scrolling technology.
- 11
Wolfenstein: The New Order
Single-player alternative to Cosmo's Cosmic Adventure — playable solo, no multiplayer required. Shares Action with Cosmo's Cosmic Adventure.
Wolfenstein®: The New Order reignites the series that created the first-person shooter genre. Wolfenstein offers a deep game narrative packed with action, adventure and first-person combat.
- 12
DOOM
Single-player alternative to Cosmo's Cosmic Adventure — playable solo, no multiplayer required. Shares Action with Cosmo's Cosmic Adventure.
Now includes all three premium DLC packs (Unto the Evil, Hell Followed, and Bloodfall), maps, modes, and weapons, as well as all feature updates including Arcade Mode, Photo Mode, and the latest Update 6.66, which brings further multiplayer improvements as well as revamps multiplayer progression.
- 13
Quest Master
Single-player alternative to Cosmo's Cosmic Adventure — playable solo, no multiplayer required. Shares Action and Adventure with Cosmo's Cosmic Adventure.
Quest Master is a dungeon maker inspired by the classics that first made us love dungeon crawling. Unleash your imagination, alone or in local co-op, to make dungeons full of puzzles, traps and monsters. Upload them for others to explore and challenge yourself with other players’ creations.
- 14
Major Stryker
Single-player alternative to Cosmo's Cosmic Adventure — playable solo, no multiplayer required. Shares Action with Cosmo's Cosmic Adventure.
In the not-so-distant future, the calamity of World War III led to eventual world peace. But, it didn't last. Earth was invaded by alien marauders - the Kretons. Earth's united military force, still depleted after the mighty onslaught of WWIII, was not nearly sufficient to repel the numerous Kreton attacks.
- 15
Stargunner
Single-player alternative to Cosmo's Cosmic Adventure — playable solo, no multiplayer required. Shares Action with Cosmo's Cosmic Adventure.
In the far distant future, an epic war for survival takes place... Deep within the Andromeda galaxy, the people of Zile grow restless and greedy. The Zilions secretly prepare for a massive strike against the nearby planet Ytima. Fearing such an attack, the Ytimians train an elite squad of "Stargunners.
- 16
Vexlands
Single-player alternative to Cosmo's Cosmic Adventure — playable solo, no multiplayer required. Shares Adventure with Cosmo's Cosmic Adventure.
Vexlands is a realm of surprises. Every newly opened space brings a surprise: loot, resources, dungeons, monsters and disasters! Build your village where you craft new equipment before you explore uncharted areas, and find relics that explain who came before and why these lands are cursed.