Games like The Summon
Games like The Summon include Monster Hunter: World, Last Epoch, Torchlight II, Black Myth: Wukong, and Warhammer 40,000: Space Marine 2. We matched them by the tags players give The Summon on Steam (RPG, Co-op Campaign, Action RPG, Adventure, and Party-Based RPG): closest matches first, and among equally close ones the better-known games.

Monster Hunter: World
Shared: Co-op · RPG · Multiplayer

Last Epoch
Shared: RPG · Action RPG · Co-op

Torchlight II
Shared: RPG · Action RPG · Co-op

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

Warhammer 40,000: Space Marine 2
Shared: Co-op · Adventure · Multiplayer

Grim Dawn
Shared: Action RPG · RPG · Co-op

Diablo® IV
Shared: Action RPG · RPG · Co-op

FINAL FANTASY VII REMAKE INTERGRADE
Shared: RPG · Action RPG · Singleplayer

Wolcen: Lords of Mayhem
Shared: Action RPG · RPG · Singleplayer

Nobody Saves the World
Shared: Co-op · Singleplayer · Adventure

Path of Exile 2
Shared: RPG · Action RPG · Co-op

ELDEN RING
Shared: RPG · Action RPG · Singleplayer

Warhammer: Chaosbane
Shared: RPG · Co-op Campaign · Singleplayer

Secrets of Grindea
Shared: Adventure · Action RPG · Singleplayer

The Incredible Adventures of Van Helsing
Shared: RPG · Action RPG · Adventure

MONSTER HUNTER RISE
Shared: RPG · Action RPG · Co-op

ATLYSS
Shared: RPG · Action RPG · Adventure

Torchlight: Infinite
Shared: RPG · Action RPG · Adventure

The Elder Scrolls Online - Standard Edition
Shared: RPG · Adventure · Singleplayer

Wayfinder
Shared: Action RPG · RPG · Dungeon Crawler

Torchlight III
Shared: RPG · Adventure · Action RPG

Dragon's Dogma 2
Shared: RPG · Action RPG · Adventure

Path of Exile
Shared: Action RPG · RPG · Dungeon Crawler