Operation Thunderstick

Credits and licences

Everyone whose work is in this game, and the licence each piece of it carries. The 2 entries marked required are conditions of a licence, not thank-yous — they are reproduced word for word.

Attribution required

This music is licensed to us on one condition: that the author is credited in these exact words. It is copyrighted work -- not public domain, not CC0.

Music -- 7 tracks: menu, lobby, grace, wave, wave-start stinger, victory, defeatrequired
Kevin MacLeod (incompetech.com) · incompetech.com · CC BY 4.0
Used unmodified apart from a format transcode to Ogg Vorbis. No musical content of ours was added, so there is nothing to separate out in this credit.
"Darkness is Coming", "Lasting Hope", "Impending Boom", "The Descent", "Danse Macabre - Big Hit 1", "Long Road Ahead", "For the Fallen"
Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 4.0
http://creativecommons.org/licenses/by/4.0/
This is the wording the licensor's own credit generator produces (incompetech.com). It is reproduced exactly, including the punctuation. This music is copyrighted work licensed to us on condition of credit — it is not public domain.

Engine

The MIT licence does require its copyright notice to be reproduced in anything distributed, so this notice is an obligation and not a courtesy.

Godot Engine 4.7.1 -- the engine this game is built on and runs in your browserrequired
Godot Engine contributors, Juan Linietsky, Ariel Manzur · godotengine.org · MIT
The engine also carries the notices of its own third-party components; the in-game screen prints Godot's own licence text through Engine.get_license_text(), which is the authoritative copy.
Read the MIT licence
Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md).
Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.

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.

With thanks -- CC0, no attribution required

Everything below is CC0 1.0 (public domain dedication), so none of it has to be credited. It is credited anyway: knowing where a sound came from costs nothing and these people gave the work away.

Interface art and 3D models -- UI Pack 2.0, Crosshair Pack, Blaster Kit 2.1, Blocky Characters 2.0, Graveyard Kit 5.0
Kenney · kenney.nl · CC0 1.0
Buttons, sliders, checkboxes, crosshairs, the player body and its 16 looks, the held weapons and the set dressing.
Fonts -- Kenney Blocks, Kenney Future, Kenney Mini Square Mono
Kenney · kenney.nl · CC0 1.0
Every letter in this game and on the website's social cards.
Sound -- Impact Sounds, Interface Sounds, RPG Audio
Kenney · kenney.nl · CC0 1.0
Every impact you hear when the world breaks, every click in these menus, and the doors and latches.
Ambience -- the day, night, city and wind beds, and the owl
nickmaysoundmusic, Sclolex, risto_alcinov, Nox_Sound · freesound.org · CC0 1.0
Four field recordings, cut into seamless loops for this game. Source URLs are in docs/ASSET_LICENSES.md.
Sound effects -- gunshots, zombie vocals, glass, concrete, gravel footsteps
Xenonn, SubwaySandwitch420, DeltaCode, dslrguide, myfreesoundaccount1998, Anthousai, ajanhallinta, unfa, ElevatorFan2020, tonsil5, Ezcah, OozerName, loscolt890, d00121058 · freesound.org · CC0 1.0
Fifteen samples from fourteen uploaders. Source URLs are in docs/ASSET_LICENSES.md.

Built with

Tools, not assets. None of these is redistributed in the game or on the site, so no notice is owed for any of them.

gdUnit4 -- the test framework the 1,100+ engine-side tests run in
Editor-only and excluded from every export, so it is never distributed and its notice is not owed.
Pillow -- the raster library that generates the brand art
Jeffrey A. Clark and contributors · python-pillow.org · HPND
Build-time only. The brand mark, favicons and social cards are drawn from primitives by assets/brand/make_brand.py; no third-party image is used.