Crown Vault is a compact stealth route game built around planning and touch-friendly path drawing. The player sketches a route across the vault floor, first reaching the crown chamber and then continuing the escape to the exit. Guards patrol the map, lasers and barriers invalidate unsafe route segments, and the challenge comes from tracing a clean path through the layout without clipping hazards. The latest input pass keeps the self-drawn route concept but makes touch capture more continuous and forgiving on a phone.