Undertone: Procedural Web Audio & Calm OKLCH Surfaces
Every chime, card pluck, 2D6 wooden dice rattle, and Doubles jackpot chord in TerraRoll is synthesized live in your browser via the Web Audio API, requiring zero external audio downloads while keeping initial page load fast even on slow mobile networks.
Short bandpass-filtered noise bursts simulate six-sided dice tumbling across a felt tray, followed by warm triangle-and-sine pentatonic intervals that reward two-card Super Combos, Doubles jackpots, Earth Flight arrivals, and Same-Second Friend wishes without ear fatigue during multi-life sessions.
Audio initializes strictly after your first tap or click in compliance with browser autoplay rules and can be muted instantaneously from the top toolbar, remembering your preference locally.
Perceptual OKLCH Light, Dark & Reduced Motion
TerraRoll pairs a Deep Space observatory backdrop for the 3D Earth with Warm Alabaster and Starry Dark OKLCH token palettes that maintain WCAG AA text contrast across all 25 scripts, including Arabic and Persian right-to-left layouts and dense CJK typography.
Enabling prefers-reduced-motion at the OS level automatically replaces globe swoops and dice shakes with gentle opacity dissolves, while one-click theme switching updates surfaces cleanly without layout shift.