Astro the Parasite Simulator is an immersive text-based experience where you step into the microscopic shoes of a cunning parasite named Astro. Navigate the treacherous ecosystems of a host body, from the swirling bloodstream to the oxygen-deprived lungs. Forge symbiotic or parasitic relationships with cells, evade the immune system’s defenses, and adapt to survive in a world teeming with biological hazards. Every decision alters your path—will you be a benign hitchhiker or a fatal pathogen? The fate of your microscopic empire hangs in the balance.