Games like FACTORIZE: 1
Games like FACTORIZE: 1 include Slay the Spire, Slay the Spire 2, Balatro, Inscryption, and Monster Train. We matched them by the tags players give FACTORIZE: 1 on Steam (Roguelike Deckbuilder, Deckbuilding, Card Battler, Card Game, and Strategy): closest matches first, and among equally close ones the better-known games.

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

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

Balatro
Shared: Roguelike Deckbuilder · Card Game · Deckbuilding

Inscryption
Shared: Card Battler · Deckbuilding · Card Game

Monster Train
Shared: Card Battler · Deckbuilding · Card Game

9 Kings
Shared: Strategy · Deckbuilding · Roguelike Deckbuilder

Dicey Dungeons
Shared: Roguelike Deckbuilder · Deckbuilding · Card Battler

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

Wildfrost
Shared: Roguelike Deckbuilder · Card Battler · Card Game

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

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

Super Fantasy Kingdom
Shared: Strategy · Roguelike · Deckbuilding

Griftlands
Shared: Card Battler · Deckbuilding · Roguelite

DICEOMANCER
Shared: Roguelike Deckbuilder · Card Battler · Card Game

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

Library Of Ruina
Shared: Card Game · Deckbuilding · Strategy

Breachway
Shared: Deckbuilding · Roguelike Deckbuilder · Strategy

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

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

Ratropolis
Shared: Deckbuilding · Card Battler · Strategy

Roguebook
Shared: Deckbuilding · Card Game · Strategy

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

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

Touhou: Lost Branch of Legend
Shared: Roguelike Deckbuilder · Card Battler · Strategy