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The Visual tab controls how the WebGL renderer presents organisms, food, and environmental features. All settings take effect immediately without resetting the simulation.

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Checkboxes

Death Particles can be disabled for a meaningful performance improvement on lower-end devices. Each kill event otherwise triggers multiple particle allocations and per-particle position, velocity, and lifetime updates every frame.

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Sliders

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Trail length labels

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How trails work

When Trail Length is 0, the renderer clears the canvas completely between frames — each frame shows only the current organism positions. When Trail Length is greater than 0.01, the renderer skips the clear step and instead draws a full-screen quad over the previous frame using:
A trail value of 0.95 means the overlay has only 5% opacity, so previous frames fade very slowly — producing long, comet-like trails. A value of 0.1 applies 90% opacity, fading trails almost immediately.
Combine Additive Glow with a Trail Length in the Long range (0.7 – 0.95) for a bioluminescent deep-sea effect. Organisms leave glowing streaks that bloom where populations are dense, and the dark background color (rgb(5, 10, 20)) of the fade overlay matches the default canvas background exactly, keeping the scene clean.