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Blau Demo

About this game

Blau is a tranquil ocean-themed strategy game in which you place hexagonal tiles to craft vast, living seascapes. With Blau, you can immerse yourself in the quiet vastness of the sea at any time and find calm among the waves. At the same time, Blau offers a challenge for those who seek it: to keep your ocean thriving across turns, you must carefully balance energy, gold, and the environment, planning your tile layouts to harness jet streams, weather disasters, and reach milestones that expand your ever-growing seascape.

Each turn, you draw tiles from your pool and place them to expand your ocean. Build upgrades on your tiles to generate gold and energy, then end your turn to collect your resources. Keep your energy levels positive, resolve the disasters that threaten your ecosystem, and hit milestones to earn fresh tiles and keep expanding. The ocean grows one piece at a time, and every placement shapes what comes next.

Blau is a game you can take at your pace. There are no timers, no opponents, no pressure, just the steady rhythm of building your ocean. Play it as a relaxing, meditative experience, or as a thoughtful strategy challenge. Managing resources, resolving disasters, and planning efficient layouts will reward careful thinking without overwhelming complexity. Blau is about finding balance, between growth and sustainability, strategy and calm.

In this demo you will be able to play with all the basic tiles, some of the upgrades and some disasters. Also in the demo only tutorial and normal mode are available.

NOTE:

  • Localization in progress — translations may be refined in future updates

  • Spanish (Latin American Spanish speakers may notice some Spanish regional differences)

  • Portuguese (European Portuguese speakers may notice some Brazilian regional differences)

Blau Demo

A relaxing ocean tile builder where you grow a living ecosystem, while keeping its fragile balance alive. Expand across diverse sea biomes, harness ocean currents, and build a world that can sustain itself.

Developer

Onatsu Studio

Publisher

Onatsu Studio

Release Date

15 May, 2026

Platforms