MOUNTAIN DRIVING: ATTRIBUTION Model: Fictional supercar - V12 Goblin Creator: Olli Teittinen (ollitei) Creator profile: https://sketchfab.com/ollitei Original source: https://sketchfab.com/3d-models/fictional-supercar-v12-goblin-0a20e49ad5774d778567cb5c3f345786 Model identifier: 0a20e49ad5774d778567cb5c3f345786 Licence: Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ The creator describes this as a fictional design with a unique exterior and no interior. Distributed adaptation: assets/goblin.glb. Changes: converted the supplied FBX to glTF, reoriented and scaled the geometry, removed the presentation shadow plane, neutralized the wheel axles, rebuilt PBR materials and embedded resized textures. Added selectable paint, including matte black and preset finishes, tinted glass, responsive brake lights, independent wheel steering and rolling, and rear wheel lock. Brake calipers steer with the front wheels but do not spin. The source body shape and its integrated exhaust outlets are retained. The driving calibration and generic V8 soundtrack are gameplay adaptations, not specifications or a recording of a real V12 engine. The adapted model and its textures remain available under CC BY 4.0. Keep this attribution, source and licence links and identify further modifications when redistributing. No creator endorsement is implied. The licence is provided without warranties; it does not grant patent or trademark rights. Rendering library: Three.js 0.185.1 Copyright the Three.js authors. MIT licence. https://github.com/mrdoob/three.js Full licence: vendor/THREE-LICENSE.txt GLTFLoader import paths were adjusted for this standalone distribution. Original game code: copyright 2026 Joni Finskas. GNU General Public License, version 3 only (GPL-3.0-only); full text: LICENSE. The software is provided without warranty. Third-party licences above remain applicable to their respective assets. LANDSCAPE ASSETS: CC0 1.0 Poly Haven assets are CC0: https://polyhaven.com/license https://creativecommons.org/publicdomain/zero/1.0/ Alps Field: Andreas Mischok https://polyhaven.com/a/alps_field File: alps_field_2k.hdr (environment lighting and reflections) Aerial Grass Rock: Rob Tuytel https://polyhaven.com/a/aerial_grass_rock Files: aerial_grass_rock_diff_2k.jpg, aerial_grass_rock_nor_gl_1k.jpg Rock Face 03: Dario Barresi (photography), Rico Cilliers (processing) https://polyhaven.com/a/rock_face_03 Files: rock_face_03_diff_2k.jpg, rock_face_03_nor_gl_1k.jpg Textures are recoloured/blended in the terrain shader. Landscape geometry, road and scenery are procedurally authored for this game. Pine branch textures and distant tree sprites are baked from the photographs credited below; bark uses the same asset's bark photographs. The coastal routes are fictional Mediterranean roads, not surveyed routes. The circuit layout is credited below. The photographic HDR environment is an alpine lighting source. The sky and coastal background geometry are authored for the fictional route. AUDIO: CC0 1.0 tire-squeal: JeffPearson https://freesound.org/people/JeffPearson/sounds/850041/ Public OGG preview: https://cdn.freesound.org/previews/850/850041_17113968-lq.ogg Distributed locally as tyres.ogg. Car Strong Wind Noise.mp3: FunWithSound https://freesound.org/people/FunWithSound/sounds/439242/ Public OGG preview: https://cdn.freesound.org/previews/439/439242_6456158-lq.ogg Distributed locally as wind.ogg. The source pages expressly identify these audio assets as CC0. Tyre and wind recordings are cropped/crossfaded in memory for playback. Short exhaust and impact sounds are synthesized separately from the V8 recordings. These are generic vehicle sounds, not a verified recording of this exact car. All asset licences checked on 2026-09-09. No attribution is required by CC0; creator credits document the sources and acknowledge the creators. V8 ENGINE AUDIO: CC BY-SA 4.0 Generic V8 Engine Sound: DerMeehdrescher / Meehdrescher Studios https://opengameart.org/content/generic-v8-engine-sound Original archive: https://opengameart.org/sites/default/files/genericv8sound.zip Licence: https://creativecommons.org/licenses/by-sa/4.0/ Source page and attribution checked 2026-09-09. Acc_05570.wav is distributed as assets/audio/v8-acceleration.wav. Dec_05581.wav is distributed as assets/audio/v8-deceleration.wav. Original lossless 48 kHz, 16-bit PCM files are retained without sample changes. Playback modifications: loop-seam crossfades in memory, pitch shifting, filtering and load/coast mixing. Adaptations of these engine sounds are provided under CC BY-SA 4.0. Preserve attribution and licence, identify changes, and distribute adapted engine audio under the same licence. No additional restrictions apply to these audio assets or their adaptations. Other assets keep their own licences. The creator identifies these as V8 engine sounds; exact vehicle and recording provenance are not verified. They are not claimed as V12 Goblin or V12 engine recordings. PINE MATERIALS: CC0 1.0 Pine Tree 01: Rob Tuytel (photography), Rico Cilliers (modeling) https://polyhaven.com/a/pine_tree_01 https://polyhaven.com/license https://creativecommons.org/publicdomain/zero/1.0/ Files: pine_tree_01_twig_diff_1k.jpg, pine_tree_01_twig_alpha_1k.png, pine_tree_01_twig_nor_gl_1k.jpg, pine_tree_01_bark_diff_1k.jpg, pine_tree_01_bark_nor_gl_1k.jpg. Original texture files are retained; the game samples a twig region of the atlas and applies the photographs to procedurally arranged branches and trunks. The complete Pine Tree 01 geometry is not included. Source file hashes and CC0 licence checked on 2026-09-10. NÜRBURGRING GRAND PRIX LAYOUT: MIT F1 Circuits by Tomislav Bacinger, copyright 2019–2025. https://github.com/bacinger/f1-circuits/blob/master/circuits/de-1927.geojson Data: assets/nurburgring-gp.json. Complete licence and source revision: assets/nurburgring-gp-LICENSE.txt. Coordinates are projected into the game and smoothed into a closed route. The horizontal layout follows the source. Elevation, widths, surroundings and pit buildings are simplified. This is an unofficial recreation with no endorsement. INTERFACE: MIT React, React DOM and Radix Select. Bundled dependency versions and complete licence texts are in vendor/ui-controls.LICENSE.txt. Engine-loop crossfades align the waveforms and compensate for volume changes. The original audio files are unchanged. These audio adaptations remain under CC BY-SA 4.0.