Games like 8 Worlds
Games like 8 Worlds include Balatro, Slay the Spire, Slay the Spire 2, Inscryption, and Dungeons & Degenerate Gamblers. We matched them by the tags players give 8 Worlds on Steam (Casual, Strategy, Card Game, Roguelike, and Roguelike Deckbuilder): closest matches first, and among equally close ones the better-known games.

Balatro
Shared: Card Game · Roguelike · Roguelike Deckbuilder

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

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

Inscryption
Shared: Card Game · Roguelike · Strategy

Dungeons & Degenerate Gamblers
Shared: Strategy · Roguelike · Roguelike Deckbuilder

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

Vampire Survivors
Shared: Roguelite · Pixel Graphics · Casual

Luck be a Landlord
Shared: Strategy · Roguelike Deckbuilder · Roguelite

9 Kings
Shared: Strategy · Roguelike · Card Game

Slots & Daggers
Shared: Casual · Strategy · Roguelike

Loop Hero
Shared: Roguelike · Roguelite · Pixel Graphics

Combolands: Roguelike Citybuilder
Shared: Strategy · Roguelike · Roguelite

Meme Mayhem
Shared: Card Game · Roguelike Deckbuilder · Roguelike

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

DICEOMANCER
Shared: Strategy · Card Game · Roguelike Deckbuilder

Ballionaire
Shared: Casual · Roguelike · Strategy

Dicey Dungeons
Shared: Roguelike Deckbuilder · Roguelike · Roguelite

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

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

Breachway
Shared: Strategy · Card Game · Roguelike

Heretic's Fork
Shared: Strategy · Card Game · Roguelike Deckbuilder

Super Fantasy Kingdom
Shared: Strategy · Roguelike · Card Game

Across the Obelisk
Shared: Casual · Card Game · Roguelike Deckbuilder

Alina of the Arena
Shared: Roguelike · Roguelike Deckbuilder · Card Game