Games like RuinsGate Survivors
Games like RuinsGate Survivors include Death Must Die, Soulstone Survivors, Halls of Torment, Megabonk, and Hero Siege. We matched them by the tags players give RuinsGate Survivors on Steam (Action Roguelike, Loot, Bullet Heaven, Hack and Slash, and Roguelite): closest matches first, and among equally close ones the better-known games.

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

Soulstone Survivors
Shared: Action Roguelike · Bullet Heaven · Roguelite

Halls of Torment
Shared: Action Roguelike · Roguelite · Action RPG

Megabonk
Shared: Action Roguelike · Bullet Heaven · Roguelite

Hero Siege
Shared: Action Roguelike · Hack and Slash · Action RPG

Tower of Babel: Survivors of Chaos
Shared: Action Roguelike · Bullet Heaven · Loot

Last Epoch
Shared: Loot · Hack and Slash · Action RPG

Hades
Shared: Action Roguelike · Hack and Slash · Roguelite

Path of Exile 2
Shared: Loot · Hack and Slash · Action RPG

Hades II
Shared: Action Roguelike · Hack and Slash · Roguelite

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

The Slormancer
Shared: Loot · Hack and Slash · Action RPG

Wolcen: Lords of Mayhem
Shared: Hack and Slash · Action RPG · Loot

Moonlighter
Shared: Hack and Slash · Action Roguelike · Roguelite

Diablo® IV
Shared: Loot · Hack and Slash · Action RPG

Heroes of Hammerwatch II
Shared: Action Roguelike · Action RPG · Roguelite

Vampire Survivors
Shared: Action Roguelike · Roguelite · 2D

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

Deep Rock Galactic: Survivor
Shared: Action Roguelike · Bullet Heaven · Roguelite

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

Path of Exile
Shared: Loot · Hack and Slash · Action RPG

Grim Dawn
Shared: Loot · Hack and Slash · Action RPG

Sephiria
Shared: Action Roguelike · Roguelite · Inventory Management

Yet Another Zombie Survivors
Shared: Action Roguelike · Bullet Heaven · Roguelite