MIT License

Copyright (c) 2018 Max Bittker

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
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copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

Sandglass · Pocket Biomes: JavaScript subset adaptation, original scenes and interface, copyright (c) 2026 Sandglass contributors, also MIT.
Original GPT-generated terrarium artwork is included as local WebP assets.
Source: https://github.com/MaxBittker/sandspiel/tree/9936e06b07a583aedfba9589c0cead2917f405fb
Rules adapted from crate/src/species.rs: sand gravity and density exchange, water/oil flow, heat reactions, burning, plant growth. This edition uses a discrete local flow model, omits wind/pressure and other upstream species, adds explicit steam, seeded updates and discovery tracking.