Games like Reignbreaker
Games like Reignbreaker include Hades, Hades II, Moonlighter, Soulstone Survivors, and Heroes of Hammerwatch II. We matched them by the tags players give Reignbreaker on Steam (Action RPG, Action Roguelike, Roguelite, Roguelike, and Hack and Slash): closest matches first, and among equally close ones the better-known games.

Hades
Shared: Action Roguelike · Roguelite · Hack and Slash

Hades II
Shared: Roguelite · Roguelike · Action Roguelike

Moonlighter
Shared: Roguelite · Hack and Slash · Action Roguelike

Soulstone Survivors
Shared: Action Roguelike · Roguelite · Action RPG

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

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

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

Dead Cells
Shared: Action Roguelike · Roguelike · Roguelite

Children of Morta
Shared: Roguelike · Action Roguelike · Hack and Slash

Black Myth: Wukong
Shared: Action RPG · Combat · Action

Cinderia
Shared: Action Roguelike · Roguelite · Hack and Slash

Vampire Survivors
Shared: Action Roguelike · Roguelite · Roguelike

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

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

Death Must Die
Shared: Action Roguelike · Roguelite · Hack and Slash

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

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

Megabonk
Shared: Action Roguelike · Roguelite · Roguelike

Brotato
Shared: Roguelike · Action Roguelike · Singleplayer

Ravenswatch
Shared: Action Roguelike · Roguelike · Roguelite

Lost Castle
Shared: Action Roguelike · Roguelite · Hack and Slash

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

Dreamscaper
Shared: Action Roguelike · Roguelite · Action

Gunfire Reborn
Shared: Roguelite · Roguelike · Action Roguelike