Games like Moni Mons
Games like Moni Mons include Balatro, Slay the Spire, Slay the Spire 2, Vampire Crawlers: The Turbo Wildcard from Vampire Survivors, and Inscryption. We matched them by the tags players give Moni Mons on Steam (Card Game, Deckbuilding, Creature Collector, Indie, and Casual): closest matches first, and among equally close ones the better-known games.

Balatro
Shared: Card Game · Deckbuilding · Strategy

Slay the Spire
Shared: Card Game · Deckbuilding · Strategy

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

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

Inscryption
Shared: Card Game · Deckbuilding · Card Battler

Library Of Ruina
Shared: Card Game · Deckbuilding · Strategy

DICEOMANCER
Shared: Card Game · Strategy · Deckbuilding

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

Overdungeon
Shared: Indie · Strategy · Deckbuilding

Dicey Dungeons
Shared: Deckbuilding · Indie · Card Game

Roguebook
Shared: Card Game · Deckbuilding · Indie

Yu-Gi-Oh! Legacy of the Duelist
Shared: Card Game · Deckbuilding · Strategy

Ratropolis
Shared: Deckbuilding · Card Game · Strategy

Stacklands
Shared: Card Game · Strategy · Deckbuilding

Demonic Mahjong
Shared: Card Game · Strategy · Casual

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

Decktamer
Shared: Card Game · Creature Collector · Deckbuilding

Magic: The Gathering Arena
Shared: Card Game · Deckbuilding · Strategy

9 Kings
Shared: Card Game · Strategy · Deckbuilding

Across the Obelisk
Shared: Casual · Card Game · Deckbuilding

The Bazaar
Shared: Deckbuilding · Card Game · Strategy

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

Rana Card
Shared: Card Game · Deckbuilding · Casual

Poker Night at the Inventory
Shared: Card Game · Casual · Cartoony