Emberdeep | Free Turn-Based Cave-Digging Game | Arcadia

1. Enter a cave and survey it — nothing moves until your first step.
2. Move with the arrow keys, WASD or the on-screen controls; each step or wait is one turn.
3. Dig through soil to reach crystals until the counter shows the lift’s requirement is met.
4. Watch the rocks: undermine one and it glows for a turn, then falls on the next.
5. Light both beacons by walking into them — the lift stays locked without them.
6. Reach the lift to clear the cave; undo rewinds up to 500 turns whenever you need it.

Turns. Emberdeep advances only when you act. A step, a push, or a deliberate wait each costs one turn, and everything that is going to happen — rocks settling, warnings expiring — happens in that same turn. Thinking is free.

The cave. Caves are built from walls, diggable soil, open tunnels, crystals, beacons, rocks and the lift. Walls never move; soil disappears as you walk through it, and what you dig away stays away.

Crystals and beacons. The counter shows how many crystals the lift requires; collect them by walking onto them. Both beacons in the cave must also be lit — walk into each one — before the lift unlocks. Crystals alone are never enough.

Gravity. A rock loses its support when the tile under it is dug away or vacated. It does not fall at once: it glows for one warning turn, then falls on the next, and keeps falling until something stops it. A falling rock that lands on the explorer ends the cave.

Pushing. A single rock with empty space behind it can be pushed sideways, one tile per turn. Two rocks in a row are too heavy, and a rock never pushes upward or downward.

The lift. Once the crystal requirement is met and both beacons are lit, the lift unlocks — its display shows the change. Step in and the cave is cleared, your move count recorded.

Undo and records. Undo rewinds the complete state one turn at a time, up to 500 turns deep, including the turn that crushed you. It costs nothing and is never punished. Completions and best move counts are stored per cave in your own browser.

The six caves. All caves are open from the start for practice. Clearing cave six returns you to the surface — and to cave one, with your records intact.

• Read before you dig. The cave is fully visible and completely patient. Trace your route to every crystal, both beacons and the lift before the first step — the best players finish a cave in their head first.
• Dig around, not under. Every tile of soil you remove can be the support of something above it. Approach crystals from the side or above when you can, and treat digging directly under a rock as a decision, not a habit.
• Use the warning turn. A glowing rock is information, not yet danger. One waiting turn lets it fall where you planned; walking under it on that turn is how caves end.
• Drop rocks on purpose. A rock that has fallen is a rock that can no longer surprise you. Clearing a dangerous ceiling from a safe angle before you need the passage is nearly always worth the turns.
• Push early. A rock blocking a corridor is easiest to handle before you have dug away the space you would push it into. Check the tile behind it before you commit.
• Undo without shame. Undo is unlimited in depth and cost-free — it is the designed way to explore a risky line. Try the aggressive route; the cave will not remember.
• Refine for the record. The move counter rewards routes, not speed. Once a cave is cleared, replay it with a tighter plan — combining crystal runs and beacon detours is where the big savings live.