A browser-based scratch-off game designed to feel like scratching a real lottery ticket.
Highlights
Real-time scratch interaction that reveals prize
Weighted prize system that mirrors real lottery odds
Mouse and touch input for precise, responsive control
Runs directly in the browser with no installation required
A short breakdown of ScratchFX’s shift from object spawning to a shader-driven scratch effect.
Reveal a hidden image through player input while keeping the effect responsive and performant.
Mask prefabs were instantiated at the cursor while scratching, visually erasing the surface through overlapping objects.
Instantiate(maskPrefab, clickPosition, Quaternion.identity);Per-frame instantiation introduced unnecessary overhead and scene clutter, and made tuning scratch behavior harder than it needed to be.
A custom shader samples a scratch mask texture and drives transparency directly in the material, revealing the image without spawning objects.
col.a *= (1 - mask);Cleaner logic, predictable performance, and faster iteration by turning the scratch effect into a data-driven visual system.