Single-player games like Iron Diamond
Below are 12 single-player Steam games similar to Iron Diamond, 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 Iron Diamond page.
Ranked picks
- 1
Crypt Custodian
Single-player alternative to Iron Diamond — playable solo, no multiplayer required. Shares Adventure with Iron Diamond.
Crypt Custodian is a charming metroidvania about cleaning up the afterlife. Play as Pluto - a mischievous cat who has died, and is sentenced to be the afterworld's janitor... FOREVER! Hang out with other doomed ghosts, battle beasts, and explore a vastly expansive landscape.
- 2
Leap Year
Single-player alternative to Iron Diamond — playable solo, no multiplayer required. Shares Indie and Adventure with Iron Diamond.
Leap Year is a clumsy platformer about knowledge and discovery. Explore a compact, hand drawn world filled with hidden paths. Understand the game’s secrets to reach new areas and collect all the pages of your calendar.
- 3
Ultros
Single-player alternative to Iron Diamond — playable solo, no multiplayer required. Shares Indie and Adventure with Iron Diamond.
ULTROS is a psychedelic metroidvania where you wake up stranded on The Sarcophagus — a cosmic uterus holding an ancient, demonic being. Trapped in the loop of a black hole, you will have to explore The Sarcophagus and meet its inhabitants to understand the part you play...
- 4
Constance
Single-player alternative to Iron Diamond — playable solo, no multiplayer required. Shares Indie and Adventure with Iron Diamond.
Constance is a 2D hand-drawn action adventure featuring a paintbrush-wielding artist, striving to escape from a colorful but decaying inner-world, created by her declining mental health.
- 5
ITORAH
Single-player alternative to Iron Diamond — playable solo, no multiplayer required. Shares Indie and Adventure with Iron Diamond.
Discover the world of Nahucan in this 2D action platformer. You are Itorah, the only human in this strange place. Explore, fight and survive to uncover your past and save Nahucan from its biggest threat, a mysterious plague!
- 6
Mable & The Wood
Single-player alternative to Iron Diamond — playable solo, no multiplayer required. Shares Indie and Adventure with Iron Diamond.
Hunt down massive beasts and, upon destroying them, shapeshift into their forms in order to use their powers to save or destroy the world. Players with less violent intent can find secret paths to complete Mable without killing anything, including bosses.
- 7
DOOMBLADE
Single-player alternative to Iron Diamond — playable solo, no multiplayer required. Shares Indie and Adventure with Iron Diamond.
Deep underground, Gloom Girl discovers DOOMBLADE, a sentient weapon hellbent on escape after eons in chains. Together, “Doom and Gloom” embark on a vengeful quest to unlock the powerful abilities and destroy the Dread Lords once and for all in this 2D Action Metroidvania.
- 8
Ghost Song
Single-player alternative to Iron Diamond — playable solo, no multiplayer required. Shares Indie and Adventure with Iron Diamond.
On the desolate moon of Lorian, a long-dormant Deadsuit awakens from slumber. Journey beneath the surface on an atmospheric 2D adventure of self-discovery, ancient mysteries, and cosmic terror. Explore winding caverns and acquire new abilities to unearth this alien world’s long-buried secrets.
- 9
SHEEPO
Single-player alternative to Iron Diamond — playable solo, no multiplayer required. Shares Indie and Adventure with Iron Diamond.
Explore a strange planet, collect the creatures you find, and then shape-shift into them to expand your world. Build your own path, chat with the locals, and discover the planets sprawling secrets in this quirky metroidvania platformer.
- 10
Nine Sols
Single-player alternative to Iron Diamond — playable solo, no multiplayer required. Shares Indie and Adventure with Iron Diamond.
Nine Sols is a lore rich, hand-drawn 2D action-platformer featuring Sekiro-inspired deflection focused combat. Embark on a journey of eastern fantasy, explore the land once home to an ancient alien race, and follow a vengeful hero’s quest to slay the 9 Sols, formidable rulers of this forsaken realm.
- 11
Hollow Knight
Single-player alternative to Iron Diamond — playable solo, no multiplayer required. Shares Indie and Adventure with Iron Diamond.
Forge your own path in Hollow Knight! An epic action adventure through a vast ruined kingdom of insects and heroes. Explore twisting caverns, battle tainted creatures and befriend bizarre bugs, all in a classic, hand-drawn 2D style.
- 12
Islets
Single-player alternative to Iron Diamond — playable solo, no multiplayer required. Shares Adventure with Iron Diamond.
Take to the sky and reunite a fragmented world in this surprisingly wholesome metroidvania! Help Iko adventure across beautiful hand-painted islands, receive letters from a quirky cast of characters, and face powerful monstrous adversaries.