Single-player games like Only One
Below are 8 single-player Steam games similar to Only One, 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 Only One page.
Ranked picks
- 1

Payback Protocol
Single-player alternative to Only One — playable solo, no multiplayer required. Shares Action and Indie with Only One.
Annihilate alien armies, craft devastating builds and traverse hostile biomes in this fast-paced action roguelite! Choose from a roster of vengeful combat robots, each with unique strengths and abilities, and survive relentless alien hordes as you avenge the fall of humanity.
- 2

Turnflower
Single-player alternative to Only One — playable solo, no multiplayer required. Shares Action and Indie with Only One.
Turnflower is a survivors-like where a small Flower becomes the last line of defense against swarms of insects! With just ONE button, spin and shoot through this intense and adorably chaotic challenge.
- 3

Zigdig
Single-player alternative to Only One — playable solo, no multiplayer required. Shares Action and Indie with Only One.
Fight nonstop in this fast-paced auto shooter where upgrades happen in real time. Find the relic. Gather resources. Extract before time runs out. Risk staying longer for greater rewards.
- 4

Shardstorm
Single-player alternative to Only One — playable solo, no multiplayer required. Shares Action and Indie with Only One.
After the Echo's fall, her shattered sins awoke once more. Shardstorm is a deep, replayable horde-survivor ARPG. Wield seven sentient Shards, battle towering Sin bosses, and break the game with infinite weapon scaling, skill trees, and legendary loot. Survive the storm. Shape your Wrath.
- 5

Risen Blade
Single-player alternative to Only One — playable solo, no multiplayer required. Shares Action with Only One.
Smash the Dudes. Risen Blade is a fast-paced hack and slash roguelike where you chain brutal combos, carve through endless enemies, and forge powerful builds across unique classes.
- 6

Cloud Keeper: Shrine of Dal
Single-player alternative to Only One — playable solo, no multiplayer required. Shares Action and Indie with Only One.
Summon an army of clouds in this roguelite bullet heaven survivors-like inspired by Korean folklore! Recruit and fuse cloud companions, befriend shrine visitors, and uncover the mystery of the moon goddess!
- 7

Arms of God
Single-player alternative to Only One — playable solo, no multiplayer required. Shares Action and Indie with Only One.
Gear up for a battle through hell in this roguelite Bullet Heaven Arena Autoshooter with Doom-inspired gore vibes, metal music, and a satisfying combat feel. Wield five weapons at once, upgrade and merge them to forge indestructible builds, and bring divine justice to a world on the brink of chaos.
- 8

Ashen Swarm
Single-player alternative to Only One — playable solo, no multiplayer required. Shares Action and Indie with Only One.
A dark fantasy arena roguelite where your sins shape every run. Take the Oath and stay clean — or go Unbound and let Corruption take root. Seven sins. A Judge who remembers everything. All power is paid for.