Credits for ancient-cities.tukka.dev The architecture, animal reliefs, decorative carvings, cliff shapes and surface patterns are original procedural artwork created for this product, and so are the people's clothes, the paving, the clouds and the water. Babylon, Petra, Thebes, Persepolis, Mohenjo-daro and Angkor reuse the credited CC0 character and nature models below; their buildings add no third-party model or texture assets. Bull capitals, guardian creatures, wells, brick patterns, lotus spires, Bayon faces and naga railings are original generated geometry and shading. The city preview pictures are captures of these scenes. 1. Ultimate Nature Pack What: low-poly 3D models of trees, palms, plants, bushes, flowers, grass, rocks and logs, converted to GLB and scaled. Author: Quaternius (quaternius.com) Source: https://quaternius.itch.io/150-lowpoly-nature-models License: CC0 1.0 Universal (public domain), https://creativecommons.org/publicdomain/zero/1.0/ Used in: /models/nature.glb: the trees, palms, bushes, grass and rocks of every city. 2. Donkey, Sheep, Cow, Bull, Horse, Shiba Inu and Deer What: low-poly 3D models with their animations, scaled and recoloured in the browser, with panniers added to the horses and donkeys; the downloaded GLB files remain unchanged. Author: Quaternius (quaternius.com) Source: https://poly.pizza/m/qmX6nhnvp7 (Donkey), https://poly.pizza/m/C39AUXUUes (Sheep), https://poly.pizza/m/26zM1outCr (Cow), https://poly.pizza/m/a8PIIYwF7r (Bull), https://poly.pizza/m/qvTrSG9pZF (Horse), https://poly.pizza/m/y4wdQpg767 (Shiba Inu), https://poly.pizza/m/T6Cs7tmMHJ (Deer) License: CC0 1.0 Universal (public domain), https://creativecommons.org/publicdomain/zero/1.0/ Used in: /models/donkey.glb, sheep.glb, cow.glb, bull.glb, horse.glb, dog.glb (the Shiba Inu) and deer.glb: the animals of every city. 3. Universal Base Characters (Standard) What: a man and a woman, rigged, with eyes, eyebrows and hairstyles (Simple Parted, Buzzed, Long, Beard, Buns, Buzzed Female), packed into GLB with smaller textures, the skin and hair made neutral so each person gets their own colours. Their bodies are slimmed and dressed in clothes generated in the browser. Author: Quaternius (quaternius.com) Source: https://quaternius.itch.io/universal-base-characters License: CC0 1.0 Universal (public domain), https://creativecommons.org/publicdomain/zero/1.0/ Used in: /models/male.glb and female.glb: the people of every city. 4. Universal Animation Library (Standard) What: animations for the same skeleton: standing, walking, jogging, talking, kneeling and a few more, rotations only, packed into GLB. Author: Quaternius (quaternius.com) Source: https://quaternius.itch.io/universal-animation-library License: CC0 1.0 Universal (public domain), https://creativecommons.org/publicdomain/zero/1.0/ Used in: /models/moves.glb: how the people of every city move. 5. Blue Marble: Next Generation, with topography and bathymetry (December) What: a picture of the whole Earth from satellite images, resized to 4096x2048 WebP for the globe. Author: NASA Earth Observatory (Reto Stöckli) Source: https://science.nasa.gov/earth/earth-observatory/blue-marble-next-generation/base-topography-bathymetry License: NASA imagery is not protected by copyright in the United States and is free to use with credit, per NASA's media usage guidelines: https://www.nasa.gov/nasa-brand-center/images-and-media/ Used in: /earth.webp, the globe on the home page. 6. three.js What: 3D library that draws the globe and the worlds; ships in the site's JavaScript. Author: three.js authors Source: https://github.com/mrdoob/three.js License: MIT. Copyright © 2010-2026 three.js authors Used in: the globe on the home page, and every city page. 7. Nuxt What: web framework; its runtime code ships in the site's JavaScript. Author: Nuxt Team Source: https://github.com/nuxt/nuxt License: MIT. Copyright (c) 2016-present - Nuxt Team Used in: every page. 8. Vue What: JavaScript framework; its runtime ships in the site's JavaScript. Author: Yuxi (Evan) You and Vue contributors Source: https://github.com/vuejs/core License: MIT. Copyright (c) 2018-present, Yuxi (Evan) You Used in: every page. 9. Vue Router What: page routing; ships in the site's JavaScript. Author: Eduardo San Martin Morote Source: https://github.com/vuejs/router License: MIT. Copyright (c) 2019-present Eduardo San Martin Morote Used in: every page. 10. Unhead What: manages page titles and meta tags; ships in the site's JavaScript. Author: Harlan Wilton Source: https://github.com/unjs/unhead License: MIT. Copyright (c) Harlan Wilton Used in: every page. 11. UnJS utilities bundled by Nuxt (ofetch, ufo, defu, destr, hookable, unctx) What: small helper libraries; ship in the site's JavaScript. Author: Pooya Parsa Source: https://github.com/unjs License: MIT. Copyright (c) Pooya Parsa Used in: every page. 12. devalue What: serializes page data; ships in the site's JavaScript. Author: Rich Harris and contributors Source: https://github.com/Rich-Harris/devalue License: MIT. Copyright (c) 2018-19 the devalue contributors Used in: every page. 13. Tailwind CSS What: CSS framework; its generated styles ship in the site's CSS. Author: Tailwind Labs, Inc. Source: https://github.com/tailwindlabs/tailwindcss License: MIT. Copyright (c) Tailwind Labs, Inc. Used in: every page. 14. Nuxt Site Config What: holds the site's address for the sitemap module; ships in the site's JavaScript. Author: Harlan Wilton Source: https://github.com/harlan-zw/nuxt-site-config License: MIT. Copyright (c) 2023-Present - Harlan Wilton Used in: every page. 15. Fraunces What: typeface; its font files ship with the site. Author: The Fraunces Project Authors (Undercase Type) Source: https://github.com/undercasetype/Fraunces (files packaged by Fontsource, https://fontsource.org) License: SIL Open Font License 1.1 (text below). Copyright 2020 The Fraunces Project Authors (github.com/undercasetype/Fraunces) Used in: headings, the site name and the city names. 16. Figtree What: typeface; its font files ship with the site. Author: The Figtree Project Authors (Erik Kennedy) Source: https://github.com/erikdkennedy/figtree (files packaged by Fontsource, https://fontsource.org) License: SIL Open Font License 1.1 (text below). Copyright 2022 The Figtree Project Authors (https://github.com/erikdkennedy/figtree) Used in: all body text and labels. MIT License (applies to items 5 to 13, each under its own copyright line above) 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 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 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, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. SIL Open Font License 1.1 (applies to items 14 and 15, each under its own copyright line above) This Font Software is licensed under the SIL Open Font License, Version 1.1. This license is copied below, and is also available with a FAQ at: http://scripts.sil.org/OFL ----------------------------------------------------------- SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007 ----------------------------------------------------------- PREAMBLE The goals of the Open Font License (OFL) are to stimulate worldwide development of collaborative font projects, to support the font creation efforts of academic and linguistic communities, and to provide a free and open framework in which fonts may be shared and improved in partnership with others. The OFL allows the licensed fonts to be used, studied, modified and redistributed freely as long as they are not sold by themselves. The fonts, including any derivative works, can be bundled, embedded, redistributed and/or sold with any software provided that any reserved names are not used by derivative works. The fonts and derivatives, however, cannot be released under any other type of license. The requirement for fonts to remain under this license does not apply to any document created using the fonts or their derivatives. DEFINITIONS "Font Software" refers to the set of files released by the Copyright Holder(s) under this license and clearly marked as such. This may include source files, build scripts and documentation. "Reserved Font Name" refers to any names specified as such after the copyright statement(s). "Original Version" refers to the collection of Font Software components as distributed by the Copyright Holder(s). "Modified Version" refers to any derivative made by adding to, deleting, or substituting -- in part or in whole -- any of the components of the Original Version, by changing formats or by porting the Font Software to a new environment. "Author" refers to any designer, engineer, programmer, technical writer or other person who contributed to the Font Software. PERMISSION & CONDITIONS Permission is hereby granted, free of charge, to any person obtaining a copy of the Font Software, to use, study, copy, merge, embed, modify, redistribute, and sell modified and unmodified copies of the Font Software, subject to the following conditions: 1) Neither the Font Software nor any of its individual components, in Original or Modified Versions, may be sold by itself. 2) Original or Modified Versions of the Font Software may be bundled, redistributed and/or sold with any software, provided that each copy contains the above copyright notice and this license. These can be included either as stand-alone text files, human-readable headers or in the appropriate machine-readable metadata fields within text or binary files as long as those fields can be easily viewed by the user. 3) No Modified Version of the Font Software may use the Reserved Font Name(s) unless explicit written permission is granted by the corresponding Copyright Holder. This restriction only applies to the primary font name as presented to the users. 4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font Software shall not be used to promote, endorse or advertise any Modified Version, except to acknowledge the contribution(s) of the Copyright Holder(s) and the Author(s) or with their explicit written permission. 5) The Font Software, modified or unmodified, in part or in whole, must be distributed entirely under this license, and must not be distributed under any other license. The requirement for fonts to remain under this license does not apply to any document created using the Font Software. TERMINATION This license becomes null and void if any of the above conditions are not met. DISCLAIMER THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM OTHER DEALINGS IN THE FONT SOFTWARE.