Steam Playtests
CATACOMBOS

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CATACOMBOS playtest

by ZERO ART PROJECT

CATACOMBOS is a physics-driven roguelite combo-builder where you throw and merge cats, build absurd synergies with cards and cat hats, and crush armies of dogs in the depths of the catacombs.

Anyone with a Steam account can join, and it's free.

Access
Instant
On playtest since
Oct 7, 2026
Planned release
Mar 2027
Developer
ZERO ART PROJECT
Platforms
Windows, macOS
Players
Single-player
Languages
English, Russian

How to join the CATACOMBOS playtest

  1. Open the game's Steam page with the Join playtest button. Sign in to Steam if it asks.
  2. Use the CATACOMBOS playtest signup there. You're in straight away, with nothing to pay.
  3. The playtest shows up in your Steam library, ready to install and play.

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About CATACOMBOS

THROW AND MERGE CATS

Toss cats onto the battlefield and merge matching fighters to create stronger forms. Every merge can trigger abilities, summon reinforcements, and unleash devastating chain reactions.

BUILD WILD COMBOS

Cards, cats, and relics all interact with one another. A single well-timed merge can call in reinforcements, empower your entire squad, and turn an ordinary move into a catastrophe for the canine army.

EQUIP RULE-BREAKING HATS

Hats aren't just for show. They modify your cats, unlock new synergies, and help you create increasingly bizarre builds. Occasionally, they also make a cat look suspiciously fashionable.

MAKE EVERY RUN DIFFERENT

Choose your path, take risks in unpredictable events, visit shops, remove unwanted cats from your roster, and prepare to face a cast of bizarre canine bosses.

CHANGE THE WAY YOU PLAY

Unlock heroes with completely different mechanics. The Rogue, Warrior, Necromancer, Engineer, and others each use cats, cards, merges, and run resources in their own unique way.

COMPLETE THE CAT ENCYCLOPEDIA

Discover new cats, hats, items, and spells as you restore the missing pages of a mysterious ancient journal. Uncover every secret hidden within the world of CATACOMBOS!

From the game's Steam page.