Games like Undying Flame
Games like Undying Flame include Death Must Die, Vampire Survivors, Halls of Torment, Sir, We Have an Orc Problem, and Deep Rock Galactic: Survivor. We matched them by the tags players give Undying Flame on Steam (Bullet Hell, Hack and Slash, Roguelite, Incremental, and Tower Defense): closest matches first, and among equally close ones the better-known games.
Death Must Die
Shared: Bullet Hell · Roguelite · Hack and Slash
Vampire Survivors
Shared: Bullet Hell · Roguelite · 2D
Halls of Torment
Shared: Bullet Hell · Roguelite · Hack and Slash
Sir, We Have an Orc Problem
Shared: Incremental · Tower Defense · Roguelite
Deep Rock Galactic: Survivor
Shared: Bullet Hell · Roguelite · PvE
Necrosmith
Shared: Bullet Hell · Roguelite · Tower Defense
Monsters are Coming!
Shared: Roguelite · Bullet Hell · Tower Defense
Rogue: Genesia
Shared: Bullet Hell · Roguelite · PvE
BALL x PIT
Shared: Roguelite · Bullet Hell · Action
Necrosmith 2
Shared: Roguelite · Bullet Hell · Tower Defense
Shape of Dreams
Shared: Hack and Slash · Roguelite · PvE
Tower of Babel: Survivors of Chaos
Shared: Bullet Hell · Roguelite · Hack and Slash
Astro Prospector
Shared: Incremental · Roguelite · Bullet Hell
Wall World
Shared: Roguelite · Tower Defense · Strategy
Moonlighter
Shared: Hack and Slash · Roguelite · Pixel Graphics
Soulstone Survivors
Shared: Bullet Hell · Roguelite · Hack and Slash
Void Miner – Incremental Asteroids Roguelite
Shared: Bullet Hell · Roguelite · Incremental
Dead Cells
Shared: Roguelite · Hack and Slash · 2D
Nordic Ashes: Survivors of Ragnarok
Shared: Bullet Hell · Roguelite · Strategy
Hero Siege
Shared: Hack and Slash · Top-Down · Pixel Graphics
Asgard's Fall — Viking Survivors
Shared: Bullet Hell · Roguelite · Hack and Slash
Rotwood
Shared: Hack and Slash · Roguelite · PvE
Glyphica: Typing Survival
Shared: Bullet Hell · Roguelite · PvE
(the) Gnorp Apologue
Shared: Incremental · Roguelite · Strategy