Games like Northwind
Games like Northwind include Slay the Spire, Balatro, Slay the Spire 2, Wildfrost, and Dicey Dungeons. We matched them by the tags players give Northwind on Steam (Roguelike Deckbuilder, Card Game, Card Battler, Deckbuilding, and Roguelike): closest matches first, and among equally close ones the better-known games.

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

Balatro
Shared: Card Game · Roguelike Deckbuilder · Roguelike

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

Wildfrost
Shared: Roguelike Deckbuilder · Card Battler · Card Game

Dicey Dungeons
Shared: Roguelike Deckbuilder · Card Battler · Deckbuilding

Monster Train
Shared: Card Battler · Card Game · Deckbuilding

9 Kings
Shared: Card Game · Roguelike Deckbuilder · Strategy

Dungeons & Degenerate Gamblers
Shared: Roguelike Deckbuilder · Card Game · Roguelike

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

Ratropolis
Shared: Card Battler · Deckbuilding · Card Game

Inscryption
Shared: Card Game · Card Battler · Deckbuilding

Super Fantasy Kingdom
Shared: Roguelike · Strategy · Card Game

Astrea: Six-Sided Oracles
Shared: Roguelike Deckbuilder · Card Battler · Card Game

Monster Train 2
Shared: Roguelike Deckbuilder · Card Game · Deckbuilding

Yao-Guai Hunter
Shared: Roguelike Deckbuilder · Card Game · Card Battler

Black Jacket
Shared: Roguelike Deckbuilder · Card Game · Deckbuilding

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

Breachway
Shared: Card Game · Roguelike Deckbuilder · Roguelike

As We Descend
Shared: Roguelike Deckbuilder · Card Game · Card Battler

Backpack Hero
Shared: Roguelike Deckbuilder · Deckbuilding · Replay Value

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

Roguebook
Shared: Card Game · Deckbuilding · Roguelite

LONESTAR
Shared: Roguelike Deckbuilder · Roguelike · Card Battler

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