Single-player games like 9th Sentinel Sisters
Below are 13 single-player Steam games similar to 9th Sentinel Sisters, 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 9th Sentinel Sisters page.
Ranked picks
- 1

Trinity Fusion
Single-player alternative to 9th Sentinel Sisters — playable solo, no multiplayer required. Shares Action and Indie with 9th Sentinel Sisters.
Three fractured realities. One collapsing multiverse. Fast, fluid combat in a dark sci-fi Roguevania where each run begins in a separate universe — then lets you fuse your parallel selves, powers, and worlds to create brutal, ever-evolving builds.
- 2

Marfusha:Sentinel Girls
Single-player alternative to 9th Sentinel Sisters — playable solo, no multiplayer required. Shares Action and Indie with 9th Sentinel Sisters.
A high-tempo shooting game with simple controls! Upgrade your character with cards and defend the gates from your enemies.
- 3

Metal Bringer
Single-player alternative to 9th Sentinel Sisters — playable solo, no multiplayer required. Shares Action and Indie with 9th Sentinel Sisters.
In this roguelike action-adventure, control humanoid "Labor" and giant "Arms" to uncover the mysteries of the world. Create fully-customizable robots, strengthen them, and take down hordes of enemies!
- 4

Hive Jump 2: Survivors
Single-player alternative to 9th Sentinel Sisters — playable solo, no multiplayer required. Shares Action and Indie with 9th Sentinel Sisters.
Become an agent of vengeance in this bullet-heaven action roguelite! You are the lone survivor of your squad, on an alien planet with just your weapon, a jetpack, and the courage to keep fighting. Kill off alien swarms and transform their valuable guts into explosive upgrades and vital utilities.
- 5

God's Trigger
Single-player alternative to 9th Sentinel Sisters — playable solo, no multiplayer required. Shares Action and Indie with 9th Sentinel Sisters.
Slay enemies with speed and precision in an over-the-top show of blood and explosions. Play solo or with others, make split-second decisions, dodge bullets, and use weapons and abilities to inflict violence in the most graphic way possible.
- 6

Doomsday Hunters
Single-player alternative to 9th Sentinel Sisters — playable solo, no multiplayer required. Shares Action and Indie with 9th Sentinel Sisters.
Shoot stuff in a perfect pixel world, combine items, build guns, die every time! Roguelite twin-stick shooter where magic and post-apocalyptic future technologies collide. Defeat evil lord Dracula and save everyone!
- 7

Leap of Fate
Single-player alternative to 9th Sentinel Sisters — playable solo, no multiplayer required. Shares Action and Indie with 9th Sentinel Sisters.
Leap of Fate is a furiously-paced cyberpunk roguelite about overcoming your fears and achieving your fate. In a New York City where magic is real, you play as a technomage who must develop unspeakable powers to confront the Crucible of Fates. Can you survive the trials?
- 8

Insect Swarm
Single-player alternative to 9th Sentinel Sisters — playable solo, no multiplayer required. Shares Action and Indie with 9th Sentinel Sisters.
The insect swarm is a swarm consists of millions of alien insects, and you, as the only survival on this barren planet, will have to fight against them dauntlessly. Good luck!
- 9

NieR:Automata™
Single-player alternative to 9th Sentinel Sisters — playable solo, no multiplayer required. Shares Action with 9th Sentinel Sisters.
NieR: Automata tells the story of androids 2B, 9S and A2 and their battle to reclaim the machine-driven dystopia overrun by powerful machines.
- 10

Vampire Survivors
Single-player alternative to 9th Sentinel Sisters — playable solo, no multiplayer required. Shares Action and Indie with 9th Sentinel Sisters.
Mow down thousands of night creatures and survive until dawn! Vampire Survivors is a gothic horror casual game with rogue-lite elements, where your choices can allow you to quickly snowball against the hundreds of monsters that get thrown at you. Be the bullet hell!
- 11

ENDER LILIES: Quietus of the Knights
Single-player alternative to 9th Sentinel Sisters — playable solo, no multiplayer required. Shares Action and Indie with 9th Sentinel Sisters.
ENDER LILIES is a dark fantasy 2D action RPG about unraveling the mysteries of a destroyed kingdom. On this sorrowful journey, encounter horrific enemies against whom a moment of inattention could be fatal. Overcome these hardships and seek the truth with the help of fallen knights.
- 12

ENDER MAGNOLIA: Bloom in the Mist
Single-player alternative to 9th Sentinel Sisters — playable solo, no multiplayer required. Shares Action with 9th Sentinel Sisters.
Decades after the events of ENDER LILIES, Homunculi — sorrowful, artificial life forms — roam the land. In this dark fantasy Metroidvania, face formidable enemies and explore a bewitching post-apocalyptic world. Humans and Homunculi — what awaits at the end of the quest for their salvation?
- 13

Radiant Silvergun
Single-player alternative to 9th Sentinel Sisters — playable solo, no multiplayer required. Shares Action with 9th Sentinel Sisters.
Set on the earth and in space on July 14, 2520 A.D., the film explores the mystery of mankind's extinction. Various terrains become battlefields. Enemies attack from all directions. There are 23 bosses in total. Aim for a high score by making full use of score bonuses and level-up weapons!