A full-3D cave surveying game with 24 seeded surveys. Walk a surveyor along a safe loop, plant a tripod on each glowing pad, then look through the rangefinder back at the previous station and record bearing, incline and range. Measurements come from the real world coordinates, and rock pillars block the beam even when the target is on screen. Surveys from 5 add elevated stations that need an incline reading, 9 add bends with an intermediate station, 13 add magnetic interference that needs a redundant bearing, and 17 add tripods on uneven footing that must be levelled. If the loop does not close, the map screen shows the misclosure and lets you find the suspect leg and re-measure it before banking. This is one cave system with different seeded routes, not 24 separate environments.
Three or more friends can compete on the same seeded survey using the existing room lobby. Scores come from the survey each player actually banks. The shared computer is a scoreboard opponent, not another surveyor in your cave. A room run ends once, waits for the podium, and cannot be retried locally.
Best scores, unlocked surveys and successful UTC Daily streaks save on this device. Daily success counts at most once per date. Failed Daily surveys do not count. Active survey frames are not saved.
The loop misclosure was above the survey tolerance. Re-measure the suspect leg shown on the map and bank again.
The game shows an explicit recovery panel. Enable WebGL and hardware acceleration, close graphics-heavy tabs, and reload. A lost graphics context also stops the survey and requires reload.