Licenses

Music

Gamer Room: “Statik” by 1000 Handz, CC BY 4.0.
HTML Ninja: “Little Chaos” by Ketsa, CC BY 4.0.

Sound effects

Photos

Three photos on the Webpage Bulldozer page are public domain (CC0), from Wikimedia Commons, resized and cropped:

Historic tram in Malmö by Jan Pešula.
Just ducky by terri_bateman.
Cardamom buns by W.carter.

Original artwork

The gaming room model and lightmaps and the post-processing effects (ported from Opera's GameMaker post-process prefab) are original Opera work. The HTML Ninja background and bomb and the bulldozer sprites were made by Erik Möller with ChatGPT image generation, and the clips on the landing page are screen recordings of the demos. All of them are covered by the Apache License 2.0.

Page transitions

The transition shaders come from Opera's GameMaker transition prefab, ported from gl-transitions. The simplex noise in Luminance Melt is by Ian McEwan, Ashima Arts (webgl-noise). Transition authors:

0gust1: Luminance Melt, Simple Zoom
Adrian Purser: Bounce
bobylito: Polka Dots Curtain
dycm8009: Zoom In Circles
Eke Péter: Cross Warp
Fabien Benetou: Window Blinds
Fernando Kuteken: Angular, Hexagonalize, Multiply Blend, Polar Function, Rotate Scale Face
fkuteken: Circle Crop
Gaëtan Renaudeau: Directional
gre: Burn, Circle Open, Color Phase, Cube, Doorway, Fade, Fade Color, Fade Grayscale, Flye Eye, Heart, Linear Blur, Pixelize, Random Squares, Ripple, Squares Wire, Squeeze, Swap, Wind, Window Slice
Gunnar Roth: Glitch Memories
huynx: Bowtie
mandubian: Butterfly Wave, Crazy Parametric
Matt DesLauriers: Glitch Displace
mikolalysenko: Dreamy
Mr Speaker: Pin Wheel
nwoeanhinnogaehr: Caleidoscope
P-Seebauer: Color Distance
paniq: Morph
Paweł Płóciennik: Water Drop
pschroen: Directional Warp
pthrasher: Cross Hatch, Undulating Burnout
rectalogic: Cross Zoom
Rich Harris: Perlin
Sergey Kosarevsky: Swirl
TimDonselaar: Grid Flip
Xaychru: Mosaic, Radial
Zeh Fernando: Doom, Dreamy Zoom
zhmy: Leaf

The post-processing effects are ported from Opera's GameMaker post-process prefab. All MIT licensed:

Copyright (c) 2017-present gl-transitions contributors
Copyright 2026, Opera Norway AS
Copyright (C) 2011 Ashima Arts

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.

Note: Individual transitions in the transitions/ directory may have their own
license specified in their file header comments. When no license is specified,
the transition is covered by this MIT license.

three.js

Used by the Gamer Room.

The MIT License

Copyright © 2010-2026 three.js authors

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.

postprocessing

Used by the Gamer Room.

Copyright © 2015 Raoul van Rüschen

This software is provided 'as-is', without any express or implied warranty. In
no event will the authors be held liable for any damages arising from the use of
this software.

Permission is granted to anyone to use this software for any purpose, including
commercial applications, and to alter it and redistribute it freely, subject to
the following restrictions:

1. The origin of this software must not be misrepresented; you must not claim
   that you wrote the original software. If you use this software in a product,
   an acknowledgment in the product documentation would be appreciated but is
   not required.

2. Altered source versions must be plainly marked as such, and must not be
   misrepresented as being the original software.

3. This notice may not be removed or altered from any source distribution.

N8AO

Used by the Gamer Room. Dedicated to the public domain under CC0 1.0.

Web fonts

Inter Tight and Roboto Mono are served as woff2 from opera-hf/fonts/, licensed under the SIL Open Font License 1.1 (full license texts are bundled next to the files: opera-hf/fonts/inter-tight/LICENSE and opera-hf/fonts/roboto-mono/LICENSE):