Games like REX
Games like REX include Hades, Hades II, Vampire Survivors, Megabonk, and Death Must Die. We matched them by the tags players give REX on Steam (Roguelike, Roguelite, Action Roguelike, Roguelike Deckbuilder, and Casual): closest matches first, and among equally close ones the better-known games.

Hades
Shared: Roguelite · Action Roguelike · Roguelike

Hades II
Shared: Roguelike · Roguelite · Action Roguelike

Vampire Survivors
Shared: Action Roguelike · Roguelite · Roguelike

Megabonk
Shared: Roguelike · Action Roguelike · Roguelite

Death Must Die
Shared: Action Roguelike · Roguelite · Roguelike

Dead Cells
Shared: Roguelike · Action Roguelike · Roguelite

Brotato
Shared: Roguelike · Action Roguelike · Roguelite

Halls of Torment
Shared: Roguelite · Action Roguelike · Roguelike

Risk of Rain 2
Shared: Action Roguelike · Roguelike · Roguelite

Nuclear Throne
Shared: Roguelike · Action Roguelike · Roguelite

Soulstone Survivors
Shared: Roguelite · Action Roguelike · Roguelike

Seraph's Last Stand
Shared: Action Roguelike · Roguelike Deckbuilder · Casual

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

BALL x PIT
Shared: Roguelite · Roguelike · Action Roguelike

Ravenswatch
Shared: Roguelike · Action Roguelike · Roguelite

Balatro
Shared: Roguelike · Roguelike Deckbuilder · Roguelite

Jotunnslayer: Hordes of Hel
Shared: Action Roguelike · Roguelite · Roguelike

The Binding of Isaac: Rebirth
Shared: Roguelike · Action Roguelike · Difficult

Enter the Gungeon
Shared: Roguelike · Action Roguelike · Difficult

The Binding of Isaac
Shared: Roguelike · Action Roguelike · Difficult

Astral Ascent
Shared: Roguelite · Action Roguelike · Hack and Slash

Noobs Want to Live
Shared: Roguelike · Action Roguelike · Roguelite

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

Cinderia
Shared: Action Roguelike · Roguelite · Roguelike