Observation Daruma Log

Daruma Observation Log is a roguelite observation simulation game in which you cultivate inorganic beings called Darumas, collect mysterious energy and decide when to escape an experiment site nearing collapse. The Darumas vanish as energy is harvested from them. Inside circular chambers, they collide, reproduce and eventually disappear at the end of their lifespans.

Run the experiment

You spend funds to place circular chambers, or petri dishes, and add Red Darumas and Blue Darumas. They move on their own, collide, reproduce and mature, increasing the facility’s population. You can expand with more chambers, choose which Darumas to place and how many, and open or block connections between chambers.

You also use limited funds to place one item in each chamber. A piggy bank generates money, a hospital prioritizes disease control, a microscope speeds up growth, and a stove or fan changes the room temperature. Your choices of items and placement shape how the system develops and breaks down. Filters let you control movement, and the game’s controls are entirely mouse-based.

Manage growing chaos

A larger population does not necessarily make the facility more stable. As Daruma density rises, disease and corruption become greater risks; temperature changes can also increase the chances of infection and fire. You monitor the information on screen and respond as conditions change.

Snowfall, lightning, disease, fire and violent gusts become more severe over time, compounding the dangers and pushing the site toward chaos. Chambers can be damaged by fire, and infected Darumas can spread disease. If you do not manage the risks, the Darumas may become extinct and your results may be lost.

Choose when to escape

You can press the Escape button to try to leave before the experiment ends in total failure, but departure takes time. A countdown begins, during which you cannot interact with the game; you can only watch and hope the facility lasts until you get out. If you escape successfully, you take the mysterious energy you have collected with you.

The longer you stay, the higher the Chaos Multiplier rises, increasing the value of what you bring back. But the population may die during the countdown, costing you everything. You must judge when the run is most profitable and recognize when the facility is close to collapse.

Unlock the world’s rules

You can spend energy from successful escapes at the World Turbine to permanently unlock facilities and systems for future experiments. Each successful escape also updates the Observation Log, gradually revealing the world’s underlying rules. It records how the world breaks, what triggers chains of events and when to cut your losses.