Games like Wartheon
Games like Wartheon include Enter the Gungeon, Heroes of Hammerwatch II, Noita, The Binding of Isaac: Rebirth, and Hero Siege. We matched them by the tags players give Wartheon on Steam (Action Roguelike, Twin Stick Shooter, Wargame, Top-Down Shooter, and Dungeon Crawler): closest matches first, and among equally close ones the better-known games.

Enter the Gungeon
Shared: Action Roguelike · Dungeon Crawler · Roguelike

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

Noita
Shared: Dungeon Crawler · Roguelike · Action Roguelike

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Roguelike · Dungeon Crawler

Hero Siege
Shared: Action Roguelike · Action RPG · RPG

Hades
Shared: Action Roguelike · Roguelike · Dungeon Crawler

Hades II
Shared: Action Roguelike · Roguelike · Dungeon Crawler

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

Vampire Survivors
Shared: Action Roguelike · 2D · Roguelike

Yet Another Zombie Survivors
Shared: Action Roguelike · Top-Down Shooter · Arcade

BALL x PIT
Shared: Action Roguelike · Arcade · Top-Down Shooter

Relic Hunters Zero: Remix
Shared: Twin Stick Shooter · Action Roguelike · Top-Down Shooter

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

Nuclear Throne
Shared: Action Roguelike · Roguelike · Top-Down Shooter

UnderMine
Shared: Action Roguelike · Dungeon Crawler · RPG

Moonlighter
Shared: Action Roguelike · Dungeon Crawler · Roguelike

SYNTHETIK 2
Shared: Action Roguelike · Twin Stick Shooter · Top-Down Shooter

Tiny Rogues
Shared: Action Roguelike · Top-Down Shooter · Dungeon Crawler

Dead Estate
Shared: Action Roguelike · Twin Stick Shooter · Roguelike

Revita
Shared: Action Roguelike · Twin Stick Shooter · Dungeon Crawler

Blazing Beaks
Shared: Action Roguelike · Top-Down Shooter · Roguelike

Wizard of Legend
Shared: Action Roguelike · Dungeon Crawler · Roguelike

Dungreed
Shared: Action Roguelike · Roguelike · Dungeon Crawler

DUNGEON RAZE
Shared: Twin Stick Shooter · Dungeon Crawler · Action RPG