Games like Feline Survivor
Games like Feline Survivor include Vampire Survivors, Magicraft, 暖雪 Warm Snow, Death Must Die, and Halls of Torment. We matched them by the tags players give Feline Survivor on Steam (Deckbuilding, Action Roguelike, Bullet Hell, Roguelite, and Strategy RPG): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

Magicraft
Shared: Action Roguelike · Bullet Hell · Roguelite

暖雪 Warm Snow
Shared: Action Roguelike · Roguelite · Action-Adventure

Death Must Die
Shared: Action Roguelike · Bullet Hell · Roguelite

Halls of Torment
Shared: Action Roguelike · Bullet Hell · Roguelite

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

Nordic Ashes: Survivors of Ragnarok
Shared: Action Roguelike · Bullet Hell · Roguelite

Megabonk
Shared: Action Roguelike · Roguelite · Bullet Hell

Loop Hero
Shared: Deckbuilding · Roguelite · Strategy RPG

Pass the Fear
Shared: Action Roguelike · Roguelite · Bullet Hell

Tiny Rogues
Shared: Action Roguelike · Bullet Hell · Roguelite

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

One Step From Eden
Shared: Action Roguelike · Deckbuilding · Roguelite

Hades
Shared: Action Roguelike · Roguelite · Action

Tower of Babel: Survivors of Chaos
Shared: Action Roguelike · Bullet Hell · Roguelite

Brotato
Shared: Bullet Hell · Action Roguelike · Roguelite

Soulstone Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

Boneraiser Minions
Shared: Action Roguelike · Bullet Hell · Roguelite

Cultivation Story: Reincarnation
Shared: Action Roguelike · Bullet Hell · Roguelite

UnderMine
Shared: Action Roguelike · Roguelite · RPG

Slime 3K: Rise Against Despot
Shared: Action Roguelike · Deckbuilding · Bullet Hell

Asgard's Fall — Viking Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

God Of Weapons
Shared: Action Roguelike · Roguelite · Bullet Hell

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