Single-player games like Cosmo's Cosmic Adventure
Below are 15 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
Crystal Caves HD
Single-player alternative to Cosmo's Cosmic Adventure — playable solo, no multiplayer required. Shares Action with Cosmo's Cosmic Adventure.
Return to the underground classic world of treasures and traps in the HD remake of Crystal Caves! Guide Mylo through puzzles and arcade challenges of your favorite episodes, then explore the whole new Episode loaded with all new puzzles, enemies, challenges, hazards and help Mylo get back home!
- 3
Secret Agent HD
Single-player alternative to Cosmo's Cosmic Adventure — playable solo, no multiplayer required. Shares Action and Adventure with Cosmo's Cosmic Adventure.
Return to the remote island classic world of rewards and traps in the HD remake of Secret Agent! Guide 006 through puzzles & arcade challenges of your favorite missions, then uncover the whole new Episode loaded with all new puzzles, enemies, challenges, hazards & help 006 finally defeat DVS!
- 4
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.
- 5
Mute Crimson+
Single-player alternative to Cosmo's Cosmic Adventure — playable solo, no multiplayer required. Shares Action and Adventure with Cosmo's Cosmic Adventure.
Be a ninja and go on an action platforming adventure to save the world. Climb walls, slice up bad guys, master tricky platforming sequences and face ruthless bosses.
- 6
Cosmobreeder Yiffai
Single-player alternative to Cosmo's Cosmic Adventure — playable solo, no multiplayer required. Shares Action and Adventure with Cosmo's Cosmic Adventure.
Travel to a forgotten world and study alien creatures in this authentic retro metroidvania!
- 7
NINJA GAIDEN: Ragebound
Single-player alternative to Cosmo's Cosmic Adventure — playable solo, no multiplayer required. Shares Action and Adventure with Cosmo's Cosmic Adventure.
A brand-new side-scrolling entry to the NINJA GAIDEN series from the team behind Blasphemous, NINJA GAIDEN: Ragebound redefines the classic platformer saga in a spectacular, thrilling and challenging ninja adventure.
- 8
Zool Redimensioned
Single-player alternative to Cosmo's Cosmic Adventure — playable solo, no multiplayer required. Shares Action and Adventure with Cosmo's Cosmic Adventure.
The Ninja of the Nth Dimension is back! Explore vibrant retro landscapes, discover hidden secrets and take down menacing bosses in a modern reimagining of the classic action platforming adventure Zool.
- 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
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.
- 11
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.
- 12
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.
- 13
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.
- 14
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...
- 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.