Games like Runic Survivor
Games like Runic Survivor include Vampire Survivors, BALL x PIT, Halls of Torment, Megabonk, and Death Must Die. We matched them by the tags players give Runic Survivor on Steam (Action, Casual, Strategy, Action Roguelike, and Action RPG): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

BALL x PIT
Shared: Action · Arcade · Action Roguelike

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

Megabonk
Shared: Action Roguelike · Roguelike · Action

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

Nova Drift
Shared: Action Roguelike · Arcade · Bullet Hell

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

Noobs Want to Live
Shared: Action · Casual · Roguelike

Soulstone Survivors
Shared: Action Roguelike · Action RPG · Bullet Hell

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

Hero Siege
Shared: Action RPG · Action Roguelike · Action

Boneraiser Minions
Shared: Action Roguelike · Bullet Hell · Casual

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

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

Astro Prospector
Shared: Casual · Action Roguelike · Roguelike

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

Hades II
Shared: Action · Roguelike · Action Roguelike

Nuclear Throne
Shared: Action Roguelike · Action · Roguelike

Hades
Shared: Action Roguelike · Action · Roguelite

Octogeddon
Shared: Action · Action Roguelike · Casual

Rogue: Genesia
Shared: Action Roguelike · Bullet Hell · Arcade

Twilight Survivors
Shared: Action Roguelike · Action RPG · Bullet Hell

SHOOPER NOVA
Shared: Strategy · Casual · Action

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