Games like God Complex
Games like God Complex include Slay the Spire, Balatro, Slay the Spire 2, 9 Kings, and The Bazaar. We matched them by the tags players give God Complex on Steam (Strategy, Auto Battler, Card Game, Card Battler, and Roguelite): closest matches first, and among equally close ones the better-known games.

Slay the Spire
Shared: Card Game · Card Battler · Strategy

Balatro
Shared: Card Game · Strategy · Deckbuilding

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

9 Kings
Shared: Strategy · Auto Battler · Card Game

The Bazaar
Shared: Strategy · Auto Battler · Card Battler

Super Fantasy Kingdom
Shared: Strategy · Auto Battler · Roguelite

Ratropolis
Shared: Strategy · Card Battler · 2D

Inscryption
Shared: Card Game · Card Battler · Deckbuilding

Stacklands
Shared: Card Game · Strategy · Card Battler

Dicey Dungeons
Shared: Card Battler · Roguelite · Strategy

He is Coming
Shared: Strategy · Auto Battler · Roguelite

Dungeons & Degenerate Gamblers
Shared: Strategy · Card Game · Card Battler

Griftlands
Shared: Card Battler · Roguelite · Card Game

Die in the Dungeon
Shared: Strategy · Card Game · Deckbuilding

Monster Train
Shared: Card Battler · Card Game · Roguelite

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

Roguebook
Shared: Card Game · Strategy · Deckbuilding

DICEOMANCER
Shared: Strategy · Card Game · Card Battler

Wildfrost
Shared: Card Battler · Card Game · Roguelite

Meme Mayhem
Shared: Card Game · Auto Battler · Strategy

Commander Quest
Shared: Strategy · Card Game · Deckbuilding

Library Of Ruina
Shared: Card Game · Strategy · Deckbuilding

Breachway
Shared: Strategy · Card Game · Card Battler

Cross Blitz
Shared: Roguelite · Card Game · Strategy