Games like Marfusha:Sentinel Girls
Games like Marfusha:Sentinel Girls include Snezhinka:Sentinel Girls2, Vampire Survivors, Enter the Gungeon, Touhou Hero of Ice Fairy, and Rabi-Ribi. We matched them by the tags players give Marfusha:Sentinel Girls on Steam (Anime, Pixel Graphics, Female Protagonist, Twin Stick Shooter, and 2D): closest matches first, and among equally close ones the better-known games.

Snezhinka:Sentinel Girls2
Shared: Anime · Pixel Graphics · Twin Stick Shooter

Vampire Survivors
Shared: Pixel Graphics · 2D · Action Roguelike

Enter the Gungeon
Shared: Pixel Graphics · Action Roguelike · Twin Stick Shooter

Touhou Hero of Ice Fairy
Shared: Anime · Female Protagonist · Cute

Rabi-Ribi
Shared: Anime · Female Protagonist · Pixel Graphics

Skul: The Hero Slayer
Shared: Pixel Graphics · 2D · Action Roguelike

Last Command
Shared: Anime · 2D · Female Protagonist

TEVI
Shared: Anime · Pixel Graphics · Female Protagonist

Nuclear Throne
Shared: Pixel Graphics · Action Roguelike · Roguelite

Metal Unit
Shared: Female Protagonist · Pixel Graphics · Anime

BlazBlue Entropy Effect
Shared: 2D · Pixel Graphics · Anime

Muse Dash
Shared: Anime · Female Protagonist · Cute

NEEDY STREAMER OVERLOAD
Shared: Anime · Pixel Graphics · Cute

Celeste
Shared: Pixel Graphics · Female Protagonist · 2D

Mirage Feathers
Shared: Anime · Cute · Female Protagonist

ICEY
Shared: Anime · Female Protagonist · 2D

Lost Ruins
Shared: Anime · Pixel Graphics · Cute

Death Must Die
Shared: Pixel Graphics · Action Roguelike · Roguelite

Dungreed
Shared: Pixel Graphics · Action Roguelike · 2D

Gensokyo Night Festival
Shared: Pixel Graphics · Female Protagonist · Anime

Halls of Torment
Shared: Pixel Graphics · Action Roguelike · Roguelite

The Binding of Isaac: Rebirth
Shared: Pixel Graphics · Action Roguelike · 2D

VA-11 Hall-A: Cyberpunk Bartender Action
Shared: Pixel Graphics · Female Protagonist · Dystopian

Dead Cells
Shared: Pixel Graphics · 2D · Action Roguelike