Overview
FACTORIZE: 1, developed and published by Fermat Freaks co., Ltd, is a turn-based deckbuilding roguelite that turns prime factorization into a tactical battlefield.
Released on October 30, 2026, this single-player strategy title challenges you to build numbers from cards and unleash the powers hidden within their prime factors. The game supports English, Japanese, French, Italian, German, Spanish (Spain), Portuguese (Brazil), Simplified Chinese, Traditional Chinese, and Korean, making it accessible to a wide audience.
Highlights
- Prime-Powered Combat: Every number you create is instantly broken down into its prime factors, triggering effects like 2 attacks and 3 defense. This core mechanic means your choice of number directly shapes your battle strategy.
- Deckbuilding Roguelite: Combine cards to construct numbers, with each run offering new strategic possibilities. The roguelite structure ensures replayability as you discover new synergies and approaches.
- Read the Enemy: The game lets you see the enemy's next move, so you can plan which prime effects you need and build the right number from your hand. This adds a layer of tactical depth beyond simple card play.
Who It's For
If you enjoy deckbuilders like Slay the Spire but crave a fresh mathematical twist, FACTORIZE: 1 is for you. It appeals to strategy fans who like to think several steps ahead, as well as anyone curious about how prime factorization can be turned into engaging gameplay.
The game's approachable premise—"Leave the prime factorization to the game. You just decide which number to make"—makes it easy to pick up, while the depth of prime combinations offers plenty of room for mastery.
Game Info
- Genre: Indie, Strategy
- Developer/Publisher: Fermat Freaks co., Ltd
- Release Date: October 30, 2026
- Platform: Steam (PC)
- Features: Single-player, Steam Cloud, Family Sharing
- Languages: English, Japanese, French, Italian, German, Spanish (Spain), Portuguese (Brazil), Simplified Chinese, Traditional Chinese, Korean





