DC777

DC777 is a vault-chamber puzzle built around one uncommon rule: you carry a living diamond that can be planted. While you hold it you are heavy. While it rests on the floor you are light. That single change decides which tiles you may cross, which ruby plates stay awake, and whether the circular door will open. The DC777 adventure is twelve sealed rooms across four depths. Each chamber is a compact grid where you swipe or tap to step, push carved cubes onto pressure seals, spend gold keys on barred gates, and collect every diamond before the next lockbox lowers. Glass spans reject a carried core. Fragile tiles crack after a heavy step. Heart sockets can keep the core so you may leave without holding it. A pavilion-facet compass moves you through Threshold, Depths, Chamber, Reliquary, and Codex. The DC777 Codex explains facet geometry, pressure seals, and the four depths. Reliquary stores every stone you cut free. Progress stays on the device. The game is the center of the app; everything else exists to send you back into the next chamber.