Pentatile

Grow something unexpected

Five diamonds meet in a star. What happens next is up to you.

Pentatile is a geometric sandbox about growth and discovery. Place tiles along the edges of your mosaic and watch a simple seed become something surprising: a curling creature, a crystalline tower, or a pattern you never planned.

The spaces between are part of the game

Your tiles create enclosed spaces. Fill them with your available shapes, or discover a new shape that can change how your mosaic grows. Use the flood tool to place connected copies one by one. Tiny discoveries become unique Black Diamonds: special pieces you can collect, but cannot duplicate.

Build your own collection

Keep discoveries in your personal library. Browse the shared compendium, find approved names and their explorers, and bring eligible shapes into your active collection. Submit a named discovery for moderation to help expand the public compendium; submissions are limited to one per explorer every 24 hours.

Share what you make

Save and import your boards as files, or sign in to keep builds in your cloud library and share a link that opens your creation on Pentatile's website. Connect your Steam identity to an existing web account to access the same personal collection.

A growing experiment

This alpha focuses on building, collecting, and finding unexpected geometry. Rules and tools are still evolving. Come explore, show us what you make, and help shape where Pentatile grows next.