coalescence is a real-time interactive particle system. Tens of thousands of agents of multiple distinct species interact, cooperate, and compete with one another. Each agent leaves a trail as it moves, and reacts to the trails left behind by other agents, creating complex emergent structures. Click and drag to erase trails, forcing the agents to rebuild their patterns anew. Press "s" to save a screenshot. You can use the url parameter "resolution" to set a fixed simulation resolution, e.g. "?resolution=4096". This can be used to capture high-quality screenshots.