Games like kill -9
Games like kill -9 include Slay the Spire, Slay the Spire 2, Balatro, 9 Kings, and Dicey Dungeons. We matched them by the tags players give kill -9 on Steam (Roguelike, Card Game, Singleplayer, Strategy, and Card Battler): closest matches first, and among equally close ones the better-known games.

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

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

Balatro
Shared: Roguelike · Card Game · Singleplayer

9 Kings
Shared: Roguelike · Strategy · Card Game

Dicey Dungeons
Shared: Roguelike · Card Battler · Roguelike Deckbuilder

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

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

Inscryption
Shared: Card Game · Card Battler · Roguelike

Monster Train
Shared: Card Game · Card Battler · Roguelike

DICEOMANCER
Shared: Card Game · Strategy · Card Battler

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

Wildfrost
Shared: Card Game · Card Battler · Roguelike Deckbuilder

Roguebook
Shared: Card Game · Singleplayer · Strategy

Super Fantasy Kingdom
Shared: Roguelike · Strategy · Card Game

Griftlands
Shared: Card Battler · Deckbuilding · Card Game

Breachway
Shared: Roguelike · Card Game · Strategy

Library Of Ruina
Shared: Card Game · Strategy · Deckbuilding

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

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

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

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

Commander Quest
Shared: Card Game · Strategy · Roguelike

Ratropolis
Shared: Card Battler · Deckbuilding · Strategy

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