Games like Cool Game
Games like Cool Game include Hero Siege, Hades II, Vampire Survivors, Death Must Die, and Halls of Torment. We matched them by the tags players give Cool Game on Steam (RPG, Strategy RPG, Mystery Dungeon, Roguelike, and Party-Based RPG): closest matches first, and among equally close ones the better-known games.

Hero Siege
Shared: RPG · Roguelike · Action RPG

Hades II
Shared: Roguelike · RPG · Action

Vampire Survivors
Shared: Action Roguelike · Roguelike · 2D

Death Must Die
Shared: RPG · Action Roguelike · Roguelike

Halls of Torment
Shared: Roguelike · RPG · Action Roguelike

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

The Last Spell
Shared: RPG · Turn-Based Strategy · Strategy RPG

TROUBLESHOOTER: Abandoned Children
Shared: Strategy RPG · Party-Based RPG · RPG

Symphony of War: The Nephilim Saga
Shared: RPG · Strategy RPG · Turn-Based Strategy

Magicraft
Shared: Strategy RPG · RPG · Roguelike

The Banner Saga
Shared: Strategy RPG · RPG · Turn-Based Strategy

Rogue Legacy
Shared: Roguelike · RPG · Action

Prince of Qin
Shared: RPG · Party-Based RPG · Strategy RPG

FINAL FANTASY VII REMAKE INTERGRADE
Shared: RPG · Party-Based RPG · Action RPG

Metaphor: ReFantazio
Shared: RPG · Turn-Based Strategy · Party-Based RPG

Hades
Shared: Action Roguelike · Roguelike · Action

Tangledeep
Shared: Mystery Dungeon · Traditional Roguelike · RPG

Children of Morta
Shared: Roguelike · RPG · Action Roguelike

Streets of Rogue
Shared: RPG · Roguelike · Action Roguelike

Sephiria
Shared: Roguelike · RPG · Action Roguelike

Realm of the Mad God Exalt
Shared: Roguelike · Action Roguelike · RPG

Prime of Flames
Shared: RPG · Strategy RPG · Roguelike

Pathfinder: Kingmaker - Enhanced Plus Edition
Shared: RPG · Party-Based RPG · Strategy RPG

Legends of Kingdom Rush
Shared: Strategy RPG · RPG · Turn-Based Strategy