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

Enter the Gungeon
Single-player alternative to One by One — playable solo, no multiplayer required. Shares Action and Indie with One by One.
Enter the Gungeon is a bullet hell dungeon crawler following a band of misfits seeking to shoot, loot, dodge roll and table-flip their way to personal absolution by reaching the legendary Gungeon’s ultimate treasure: the gun that can kill the past.
- 2

Beat Blast
Single-player alternative to One by One — playable solo, no multiplayer required. Shares Action and Indie with One by One.
Create musical beats that kill. Beat Blast is a music maker, bullet hell, dungeon crawler, roguelite. Battle through dungeons and defeat big bosses. Collect weapons, passives and musical instruments!
- 3

Risk of Rain 2
Single-player alternative to One by One — playable solo, no multiplayer required. Shares Action and Indie with One by One.
Escape a chaotic alien planet by fighting through hordes of frenzied monsters – with your friends, or on your own. Combine loot in surprising ways and master each character until you become the havoc you feared upon your first crash landing.
- 4

Tiny Rogues
Single-player alternative to One by One — playable solo, no multiplayer required. Shares Action and Indie with One by One.
Tiny Rogues is a challenging fantasy rogue-lite bullet-hell dungeon crawler with rpg elements. Build a new unique character each run and fight one monster-infested room after another! Discover unique weapons, collect magical items and level up to become more and more powerful!
- 5

Nuclear Throne
Single-player alternative to One by One — playable solo, no multiplayer required. Shares Action and Indie with One by One.
Nuclear Throne is a post-apocalyptic roguelike-like top-down shooter. Not 'the final hope of humanity' post-apocalyptic, but 'humanity is extinct and mutants and monsters now roam the world' post-apocalyptic. Can you reach the Nuclear Throne?
- 6

Deadly Days: Roadtrip
Single-player alternative to One by One — playable solo, no multiplayer required. Shares Action and Indie with One by One.
Loot, shoot, and mow down zombie hordes in this bullet heaven fever dream. Embark on a deadly roadtrip, fuel your bus, decide when to extract – and get that sweet inventory management kick when that new slot in your backpack fits just right.
- 7

Overture
Single-player alternative to One by One — playable solo, no multiplayer required. Shares Action and Indie with One by One.
Overture is an action-adventure roguelike which draws heavy inspiration from hits such as Diablo, Realm of The Mad God, Zelda, and The Binding of Isaac. Explore vast randomly generated dungeons and slay hordes of cunning enemies!
- 8

Mega City Force
Single-player alternative to One by One — playable solo, no multiplayer required. Shares Action and Indie with One by One.
Retrowave Action Roguelike featuring tough agents battling crime to the electrifying music of artists like Droid Bishop, Timecop1983, and more! Choose your agent and dive into hardcore action against enemies and bosses, utilizing a vast arsenal and special abilities that will define your playstyle