Games like 9th Sentinel Sisters
Games like 9th Sentinel Sisters include Hades II, Hades, Stellar Blade™, NieR:Automata™, and Cinderia. We matched them by the tags players give 9th Sentinel Sisters on Steam (Roguelite, Action, Hack and Slash, Post-apocalyptic, and Dark): closest matches first, and among equally close ones the better-known games.

Hades II
Shared: Action · Roguelite · Hack and Slash

Hades
Shared: Roguelite · Hack and Slash · Action

Stellar Blade™
Shared: Action · Hack and Slash · Female Protagonist

NieR:Automata™
Shared: Hack and Slash · Action · Female Protagonist

Cinderia
Shared: Roguelite · Hack and Slash · Action

Vampire Survivors
Shared: Roguelite · Action Roguelike · Action

Jotunnslayer: Hordes of Hel
Shared: Roguelite · Hack and Slash · Action Roguelike

Death Must Die
Shared: Roguelite · Hack and Slash · Action

Skul: The Hero Slayer
Shared: Action · Roguelite · Action Roguelike

Bright Memory: Infinite
Shared: Action · Female Protagonist · Hack and Slash

Megabonk
Shared: Roguelite · Action · Action Roguelike

Astral Ascent
Shared: Roguelite · Hack and Slash · Action Roguelike

Hellblade: Senua's Sacrifice
Shared: Female Protagonist · Dark · Atmospheric

Halls of Torment
Shared: Roguelite · Action · Action Roguelike

ICEY
Shared: Action · Hack and Slash · Female Protagonist

Soulstone Survivors
Shared: Roguelite · Hack and Slash · Action

Darksiders III
Shared: Action · Hack and Slash · Female Protagonist

Dreamscaper
Shared: Roguelite · Action · Female Protagonist

Garden of Witches
Shared: Roguelite · Action · Hack and Slash

SWORN
Shared: Roguelite · Hack and Slash · Action

Realm of Ink
Shared: Roguelite · Hack and Slash · Female Protagonist

Lost in Random: The Eternal Die
Shared: Roguelite · Action · Hack and Slash

Bright Memory
Shared: Hack and Slash · Female Protagonist · Action

Shape of Dreams
Shared: Roguelite · Hack and Slash · Action