Daphnia Simulator

DS soft

Contains ads

About this game

Daphnia are mysterious creatures with astonishing vitality despite their tiny bodies. With just water, light, and the right temperature, they can reproduce and be kept without special equipment. This app, "Daphnia Simulation," is a full-scale aquarium simulator that allows you to experience the wonders of this tiny ecosystem right on your smartphone.

- The Core Ecosystem Cycle (Light, Algae, and NPK)
This simulator accurately models a closed ecological cycle. Utilizing your smartphone's light sensor, you can introduce "Light" into the tank to stimulate the growth of algae (cyanobacteria). Algae perform photosynthesis, supplying "Oxygen" to the water and serving as the primary "Food" for the daphnia. As daphnia consume algae and breathe, they use up food and oxygen. When daphnia complete their life cycle and die, their remains decompose into "NPK" (nitrogen, phosphorus, and potassium), which acts as a powerful fertilizer that accelerates further algae growth. Balancing this delicate web of light, oxygen, food, and nutrients is the key to sustaining your population.

- Realistic Biological Traits and Behavior
The app meticulously replicates the distinct biological traits of daphnia:
1. Phototaxis: Daphnia react dynamically to light. They exhibit negative phototaxis, swimming away from intense light source areas to seek cover, and positive phototaxis under moderate conditions, allowing you to guide their movement using your phone's sensor.
2. Hemoglobin Color Change: When the population explodes or algae growth plummets, oxygen levels drop. In response to oxygen deprivation, the daphnia synthesize hemoglobin, causing their translucent bodies to vividly turn red. This serves as a vital visual distress signal for the environment.
3. Genetic Inheritances: Every single individual possesses a unique genetic profile. Physical traits such as body size, swimming speed, weight, and lifespan are governed by distinct parameters. When they reproduce, these genetic traits are passed down to the next generation, allowing for gradual evolution and adaptation over multiple generations.

- Environmental Adaptations and Mutations (Environmental Variants)
When your tank is pushed to the absolute brink by harsh conditions, the survivors can trigger incredible, fictional mutations adapted to their environment:
- Large Species (Daphnia Magchydoridae): An adaptation to nutrient-rich environments. They store vast amounts of energy to grow into giants, moving elegantly yet awkwardly.
- Carnivorous Species (Daphnia Carnivorous): Born out of extreme starvation. Instead of swimming, they crawl along the bottom of the tank, scavenging on carcasses, molted shells, and weakened individuals of their own kind.
- Algae-Symbiotic Species (Daphnia Cyaniolus): A mutation triggered by chronic oxygen scarcity. They incorporate algae directly into their bodies to build a symbiotic relationship, gaining a stable oxygen supply via internal photosynthesis while granting the green algae mobility to find light.
- Luminous Species (Daphnia Luminous): A mystical mutation that awakens when the tank is left in total darkness for extended periods, causing their genes to glow beautifully in the dark.

- Expanded Ecosystem and User Features
The ecosystem is further enriched by the introduction of Cyclops (copepods) with rapid movements, Ostracods with protective bivalve-like shells, and the predatory Hydra, which introduces a true predator-prey dynamic. To accommodate your playstyle and device performance, the maximum population limit can be adjusted dynamically from 100 to 1,000 individuals. You can also share your unique strains with friends via LINE or the global database, and sync with the companion app "With Daphnia" to alter daphnia morphology based on your real-world daily step count.

Dive into this pocket-sized aquarium, manage the delicate laws of nature, and witness the incredible survival of these tiny organisms!

What’s new

made it possible for users to set the maximum number of daphnia (100-1000).
Improved movement
Implemented Hydra
Fine-tuned genetic logic
Improved drawing
implement Ostracoda and cyclops
import daphnia from database
export your favorite daphnia to database