Games like Groupel
Games like Groupel include Balatro, Luck be a Landlord, Slay the Spire, Banana, and Click the Button. We matched them by the tags players give Groupel on Steam (Casual, Simulation, Singleplayer, Capitalism, and Choices Matter): closest matches first, and among equally close ones the better-known games.

Balatro
Shared: Singleplayer · Deckbuilding · Roguelike Deckbuilder

Luck be a Landlord
Shared: Deckbuilding · Roguelike Deckbuilder · Simulation

Slay the Spire
Shared: Roguelike Deckbuilder · Deckbuilding · Singleplayer

Banana
Shared: Singleplayer · Casual · Simulation

Click the Button
Shared: Casual · Simulation · Capitalism

Emily is Away Too
Shared: Simulation · Casual · Choices Matter

Papers, Please
Shared: Simulation · Singleplayer · Pixel Graphics

RACCOIN: Coin Pusher Roguelike
Shared: Casual · Singleplayer · Deckbuilding

911 Operator
Shared: Simulation · Singleplayer · Casual

Slay the Spire 2
Shared: Deckbuilding · Roguelike Deckbuilder · Card Game

Game Dev Tycoon
Shared: Simulation · Casual · Singleplayer

DAVE THE DIVER
Shared: Casual · Pixel Graphics · Singleplayer

Plague Inc: Evolved
Shared: Simulation · Singleplayer · Casual

Cookie Clicker
Shared: Casual · Idler · Pixel Graphics

Touhou Mystia's Izakaya
Shared: Casual · Simulation · Pixel Graphics

Mountain
Shared: Simulation · Casual · Singleplayer

Emily is Away <3
Shared: Simulation · Choices Matter · Casual

TCG Card Shop Simulator
Shared: Simulation · Singleplayer · Capitalism

Mini Motorways
Shared: Simulation · Casual · Singleplayer

Dungeons & Degenerate Gamblers
Shared: Roguelike Deckbuilder · Deckbuilding · Singleplayer

Unpacking
Shared: Casual · Singleplayer · Simulation

Ballionaire
Shared: Casual · Singleplayer · Deckbuilding

Reigns
Shared: Choices Matter · Singleplayer · Simulation

Stardew Valley
Shared: Simulation · Pixel Graphics · Casual