How to play
Place both Jade builders, then both Coral builders. Jade takes the first turn.
Choose your builder, move to a neighboring empty square, then build on a neighboring empty square. Diagonals count. Move up at most one floor; descend any distance.
Build levels 1, 2, 3, then a blue dome. Domes cannot be entered or built on. Builders block both moving and building.
Win immediately by moving up from floor 2 to floor 3. You also win if your opponent has no legal move at the start of their turn.
Arrow keys move focus. Enter/Space chooses. Before moving you can select your other builder. Undo restores one step, including any computer reply. Progress saves on this device.
Base game rules only, without god powers. The computer uses local tactical evaluation; it is fallible.