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UNDERDIGS — Licences

Last updated: 30 October 2026 (version 1.0)

UNDERDIGS includes the open-source software and fonts below. We thank their authors. The same list and the full licence texts are also in the game (Settings ▸ Credits ▸ Licenses). The Unity engine and Unity's own packages are used under Unity's licence terms and are not listed here.

Software (MIT licence)

Fonts (SIL Open Font License 1.1)

Full licence texts

The same texts are included in the app (Settings ▸ Credits ▸ Licenses).

Software (MIT License)

THIRD-PARTY SOFTWARE NOTICES

UNDERDIGS (OSHO GAMES) includes the following third-party software, licensed under the MIT License (full text below).

Solana Unity SDK (Mobile Wallet Adapter client)
Copyright (c) 2022 Magicblock
https://github.com/magicblock-labs/Solana.Unity-SDK

BouncyCastle.NET Cryptography 2.7
Copyright (c) 2000-2025 The Legion of the Bouncy Castle Inc. (https://www.bouncycastle.org)
https://github.com/bcgit/bc-csharp

NativeWebSocket 0.0.3 (as distributed with the Solana Unity SDK)
Copyright (c) 2022 Garbles
https://github.com/garbles-labs/NativeWebSocket

websocket-sharp
Copyright (c) 2010-2023 sta.blockhead
https://github.com/sta/websocket-sharp

Json.NET (Newtonsoft.Json, Unity package com.unity.nuget.newtonsoft-json 3.2.2)
Copyright (c) 2007 James Newton-King
Copyright (c) 2016 SaladLab (Json.Net.Unity3D)
https://github.com/JamesNK/Newtonsoft.Json

MIT License

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.

Fonts: see the next pages (SIL Open Font License 1.1).

Fonts (SIL Open Font License 1.1)

RD-UI-Medium.ttf / RD-UI-Bold.ttf (font family "RD UI c6ce1a") are subsets of Noto Sans CJK JP
(Medium / Bold), and RD-UI-SC-Medium.ttf / RD-UI-SC-Bold.ttf (font family "RD UI SC d068d6") subsets of
Noto Sans CJK SC (Medium / Bold), converted to TrueType outlines and renamed for UNDERDIGS (OSHO GAMES).

Copyright 2014-2021 Adobe (http://www.adobe.com/), with Reserved Font Name 'Source'.
This Font Software is licensed under the SIL Open Font License, Version 1.1.

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SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
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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.

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