Games like Runeborn
Games like Runeborn include Balatro, Slay the Spire, Slay the Spire 2, Dungeon Clawler, and RACCOIN: Coin Pusher Roguelike. We matched them by the tags players give Runeborn on Steam (Roguelike Deckbuilder, Replay Value, Deckbuilding, Roguelike, and Turn-Based Strategy): closest matches first, and among equally close ones the better-known games.

Balatro
Shared: Roguelike Deckbuilder · Roguelike · Deckbuilding

Slay the Spire
Shared: Roguelike Deckbuilder · Roguelike · Deckbuilding

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

Dungeon Clawler
Shared: Roguelike Deckbuilder · Replay Value · Arcade

RACCOIN: Coin Pusher Roguelike
Shared: Roguelike Deckbuilder · Deckbuilding · Roguelike

Backpack Hero
Shared: Replay Value · Roguelike Deckbuilder · Deckbuilding

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

Dicey Dungeons
Shared: Roguelike Deckbuilder · Deckbuilding · Roguelike

Monster Train 2
Shared: Roguelike Deckbuilder · Deckbuilding · Roguelike

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

Gambonanza
Shared: Roguelike Deckbuilder · Replay Value · Turn-Based Strategy

9 Kings
Shared: Roguelike · Roguelike Deckbuilder · Deckbuilding

Shogun Showdown
Shared: Replay Value · Roguelike · Roguelike Deckbuilder

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

Black Jacket
Shared: Roguelike Deckbuilder · Deckbuilding · Roguelike

Die in the Dungeon
Shared: Roguelike · Deckbuilding · Roguelike Deckbuilder

Ratropolis
Shared: Deckbuilding · Replay Value · Singleplayer

Dicevaders
Shared: Roguelike Deckbuilder · Deckbuilding · Roguelike

Peglin
Shared: Deckbuilding · Roguelike · Roguelite

Wildfrost
Shared: Roguelike Deckbuilder · Deckbuilding · Roguelike

Combolands: Roguelike Citybuilder
Shared: Roguelike Deckbuilder · Roguelike · Deckbuilding

Across the Obelisk
Shared: Roguelike Deckbuilder · Turn-Based Strategy · Roguelike

Vampire Survivors
Shared: Roguelite · Roguelike · Singleplayer

Super Fantasy Kingdom
Shared: Roguelike · Roguelike Deckbuilder · Strategy