Case Study
StoneSkiper – Realistic water-skipping physics & calm gameplay
Designed an immersive casual simulation translating the nostalgic tactile joy of skipping flat stones across tranquil water into precise swipe mechanics and haptic feedback.
Overview
Skipping stones across a still lake is one of nature's purest mindful rituals—a blend of angle calculation, flick velocity, and peaceful observation. StoneSkiper translates this authentic sensory experience to mobile devices through custom hydrodynamic bounce equations, reactive water surface shaders, and nuanced haptic motor pulses.
Problem / Goal
- Translating Physical Nuance to Glass: Real stone skipping requires specific entry pitch (approx. 20 degrees) and rotational spin. The swipe mechanic had to reward mastery without feeling punishing.
- Zen Flow vs. Compulsion Fatigue: Modern mobile games often barrage players with loud timers and aggressive popups. We aimed for an ambient, meditative sanctuary that lets players unwind.
- Sensory Immersion: A physics game lives or dies by its tactile feedback. Every water strike needed distinct haptic weight and sound propagation based on velocity.
My Role
Designed the flick gesture sensitivity curves, 3D stone collection aesthetics, water ripple visual systems, and minimalist HUD.
Constraints
Maintaining realistic hydro-friction physics and wave reflection loops at smooth 60 FPS while keeping battery consumption minimal.
Process
- Physics & Gesture Calibration: Tested 30+ gesture mapping prototypes balancing fling speed, release arc, and wrist flick spin to match authentic stone skipping dynamics.
- Multi-Layer Haptics: Programmed calibrated Taptic Engine pulses—from a sharp initial water slap to decaying micro-taps as the stone loses kinetic energy.
- Atmospheric Environment Design: Crafted serene lake environments (misty dawn, sunset glow, starlit lake) with dynamic procedural water reflections and natural soundscapes.
- Tactile Progression & Collection: Designed unlockable stone archetypes (Obsidian Slice, River Pebble, Meteorite Shard) each featuring distinct aerodynamic and buoyancy traits.
Outcomes
- Deep Immersion & Replayability: Players consistently report using the app during short breaks for stress relief and mindfulness.
- Satisfying Skill Ceiling: High-scoring skips (15+ bounces) feel earned, encouraging players to master release angles and spin speeds.
- Zero Intrusive Clutter: Minimalist local storage structure keeps the experience fast, clean, and distraction-free.
Live Product
Next Steps
Designing dynamic wind weather systems and seasonal lake environments. Building a tactile game or interactive simulation? Get in touch.