Games like Ballionaire
Games like Ballionaire include Balatro, Slay the Spire, RACCOIN: Coin Pusher Roguelike, Peglin, and Slay the Spire 2. We matched them by the tags players give Ballionaire on Steam (Singleplayer, 2D, Casual, Roguelike, and Deckbuilding): closest matches first, and among equally close ones the better-known games.

Balatro
Shared: Roguelike · Singleplayer · Deckbuilding

Slay the Spire
Shared: Roguelike · Singleplayer · Deckbuilding

RACCOIN: Coin Pusher Roguelike
Shared: Roguelike · Singleplayer · Strategy

Peglin
Shared: Roguelike · Deckbuilding · Roguelite

Slay the Spire 2
Shared: Roguelike · Deckbuilding · Strategy

Vampire Survivors
Shared: 2D · Singleplayer · Roguelite

Ratropolis
Shared: 2D · Deckbuilding · Singleplayer

Vampire Crawlers: The Turbo Wildcard from Vampire Survivors
Shared: Roguelike · Deckbuilding · Singleplayer

Loop Hero
Shared: Roguelike · Deckbuilding · Roguelite

Slots & Daggers
Shared: Casual · Roguelike · Strategy

Dungeons & Degenerate Gamblers
Shared: Roguelike · Strategy · Singleplayer

Luck be a Landlord
Shared: Deckbuilding · Strategy · Roguelite

Zup! S
Shared: Casual · 2D · Singleplayer

Dicey Dungeons
Shared: Deckbuilding · Roguelike · Roguelite

9 Kings
Shared: Strategy · Roguelike · Deckbuilding

Nubby's Number Factory
Shared: Roguelike · Singleplayer · Strategy

Inscryption
Shared: Deckbuilding · Roguelike · Card Game

Combolands: Roguelike Citybuilder
Shared: Strategy · Roguelike · Roguelite

Stacklands
Shared: Roguelite · Singleplayer · Strategy

Plants vs. Zombies GOTY Edition
Shared: Singleplayer · Casual · Strategy

My Card Is Better Than Your Card!
Shared: Roguelike · Deckbuilding · Singleplayer

Die in the Dungeon
Shared: Roguelike · Deckbuilding · Strategy

Skul: The Hero Slayer
Shared: 2D · Roguelike · Singleplayer

Griftlands
Shared: Deckbuilding · Roguelite · Strategy