Games like HeistGeist
Games like HeistGeist include Griftlands, Slay the Spire, Library Of Ruina, Cyberpunk 2077, and Inscryption. We matched them by the tags players give HeistGeist on Steam (RPG, Story Rich, Card Battler, Card Game, and Turn-Based): closest matches first, and among equally close ones the better-known games.

Griftlands
Shared: Card Battler · RPG · Deckbuilding

Slay the Spire
Shared: Card Battler · Card Game · Turn-Based

Library Of Ruina
Shared: Story Rich · Card Game · Deckbuilding

Cyberpunk 2077
Shared: RPG · Cyberpunk · Story Rich

Inscryption
Shared: Card Battler · Story Rich · Card Game

Black Book
Shared: Card Battler · Card Game · Turn-Based

Slay the Spire 2
Shared: Card Game · Deckbuilding · Card Battler

9 Kings
Shared: RPG · Card Game · Deckbuilding

Gordian Quest
Shared: RPG · Card Battler · Card Game

Darkest Dungeon®
Shared: RPG · Turn-Based Combat · Dungeon Crawler

Voice of Cards: The Isle Dragon Roars
Shared: RPG · Turn-Based · Card Battler

Tainted Grail: Conquest
Shared: Card Game · Story Rich · RPG

Baldur's Gate 3
Shared: RPG · Story Rich · Turn-Based Combat

Morimens
Shared: Card Battler · Turn-Based · Card Game

Vampire Crawlers: The Turbo Wildcard from Vampire Survivors
Shared: Card Battler · Deckbuilding · Card Game

Shadowrun Returns
Shared: RPG · Turn-Based · Cyberpunk

Yakuza: Like a Dragon
Shared: RPG · Story Rich · Turn-Based

GWENT: The Witcher Card Game
Shared: RPG · Card Game · Deckbuilding

Shadowrun: Hong Kong - Extended Edition
Shared: RPG · Story Rich · Turn-Based

Deus Ex: Mankind Divided
Shared: RPG · Story Rich · Cyberpunk

SteamWorld Quest: Hand of Gilgamech
Shared: Card Battler · RPG · Card Game

Shadowrun: Dragonfall - Director's Cut
Shared: RPG · Story Rich · Turn-Based

Roguebook
Shared: RPG · Card Game · Deckbuilding

Deep Sky Derelicts
Shared: RPG · Card Battler · Deckbuilding