Games like Island Survivor
Games like Island Survivor include Vampire Survivors, Death Must Die, Halls of Torment, 暖雪 Warm Snow, and Megabonk. We matched them by the tags players give Island Survivor on Steam (Roguelite, Action Roguelike, RPG, 2D Platformer, and Roguelike): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Roguelite · Bullet Hell

Death Must Die
Shared: Action Roguelike · Roguelite · RPG

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

暖雪 Warm Snow
Shared: Roguelite · Action Roguelike · Roguelike

Megabonk
Shared: Action Roguelike · Roguelite · Roguelike

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

Hades
Shared: Roguelite · Action Roguelike · Roguelike

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

Dead Cells
Shared: Action Roguelike · Roguelike · Roguelite

Streets of Rogue
Shared: Roguelite · Action Roguelike · RPG

Soulstone Survivors
Shared: Action Roguelike · Roguelite · Bullet Hell

Nuclear Throne
Shared: Action Roguelike · Roguelike · Roguelite

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

Brotato
Shared: Action Roguelike · Roguelike · Bullet Hell

Gunfire Reborn
Shared: Roguelite · Roguelike · Action Roguelike

Blazing Beaks
Shared: Action Roguelike · Roguelite · Roguelike

Dungreed
Shared: Action Roguelike · Roguelite · Roguelike

Hades II
Shared: Roguelite · Roguelike · Action Roguelike

Magicraft
Shared: Roguelite · Action Roguelike · Bullet Hell

Boneraiser Minions
Shared: Action Roguelike · Roguelite · Bullet Hell

Rogue Legacy
Shared: Action Roguelike · Roguelike · Roguelite

BALL x PIT
Shared: Roguelite · Action Roguelike · Roguelike

Cultivation Story: Reincarnation
Shared: Action Roguelike · Roguelite · RPG

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