Credits & licenses

GBR–Spark Ninja adapts fingertip smoothing and swept swipe detection from Zlice by Aswathy, copyright 2026, under the MIT License. The game rules, graphics, interface, hand menu controls and independent autoplay demonstration in this version are new.

Hand tracking uses Google MediaPipe Tasks Vision 0.10.14 and the Hand Landmarker model. Apache License 2.0. Google model card.

Runtime, WebAssembly and model files are bundled locally. Camera input is video only, never shown in this game and never recorded or uploaded by this application. Personal bests by level, board choice and audio preferences are stored only in your browser’s local storage.

GBR branding is used for the requested event prototype. New illustrated arcade props were generated for this project; animated boards are drawn in Canvas. Effects and interface are drawn in Canvas; no Zlice photos, fruit art, audio or third-party font files are included.

The original 104 BPM background score and layered blade, material, bomb and reward effects are synthesized locally using Web Audio. No Halfbrick music, sound effects, art or code is included.