Orb Farm Game

Orb.Farm is a pixel-art sandbox where you build a sealed aquatic terrarium and then mostly leave it alone. Made by developer Max Bittker, it simulates a real ecosystem rather than a scripted one: water chemistry, plant growth, and small creatures all keep interacting even while you're not touching anything.

A session starts with an empty tank. You fill it with water, sand, and stone, then introduce algae and simple creatures like daphnia and small fish. There's no score or objective — the point is to watch oxygen and carbon dioxide levels shift as the ecosystem finds, or loses, its balance, then step back in later to add, remove, or rearrange things as it evolves.

Controls

Click and drag with the mouse to place materials — water, sand, stone, algae, grass, wood — and to drop creatures into the tank. Everything happens through the cursor; there's no keyboard control.

Tips

• Lay down water and sand first, then let algae establish before adding animals — a tank with nothing to eat can't support life.
• Watch the oxygen/carbon dioxide balance rather than the creature count. A tank that looks sparse can still be healthy if the chemistry is stable.
• Check back later instead of constantly intervening. The simulation keeps running in the background, and it rewards patience over fast decisions.

It suits anyone who wants a screen to check in on rather than compete against — closer to a digital terrarium than a typical browser game.