Games like Replik Survivors
Games like Replik Survivors include Vampire Survivors, Marfusha:Sentinel Girls, Snezhinka:Sentinel Girls2, Rabi-Ribi, and Halls of Torment. We matched them by the tags players give Replik Survivors on Steam (Action Roguelike, Anime, Cute, Female Protagonist, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Pixel Graphics · Roguelite

Marfusha:Sentinel Girls
Shared: Anime · Female Protagonist · Pixel Graphics

Snezhinka:Sentinel Girls2
Shared: Anime · Cute · Action Roguelike

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

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

Touhou Hero of Ice Fairy
Shared: Anime · Female Protagonist · Bullet Hell

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

Enter the Gungeon
Shared: Action Roguelike · Bullet Hell · Pixel Graphics

Last Command
Shared: Cute · Anime · Bullet Hell

BALL x PIT
Shared: Action Roguelike · Roguelite · Bullet Hell

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

Nuclear Throne
Shared: Action Roguelike · Pixel Graphics · Bullet Hell

BlazBlue Entropy Effect
Shared: Action Roguelike · Anime · 2D

Megabonk
Shared: Action Roguelike · Roguelite · Bullet Hell

Rabbit and Steel
Shared: Action Roguelike · Cute · Anime

Touhou Endless Dream
Shared: Anime · Roguelite · Cute

20 Minutes Till Dawn
Shared: Action Roguelike · Bullet Hell · Roguelite

Metal Unit
Shared: Female Protagonist · Anime · Action Roguelike

Realm of the Mad God Exalt
Shared: Pixel Graphics · Action Roguelike · Bullet Hell

Rocket Rats
Shared: Action Roguelike · Pixel Graphics · Bullet Hell

Boneraiser Minions
Shared: Action Roguelike · Pixel Graphics · Bullet Hell

Muse Dash
Shared: Anime · Cute · Female Protagonist

I Am Legion: Stand Survivors
Shared: Action Roguelike · Roguelite · Bullet Hell

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