About
A sudoku cousin with two layers in every cell. Fill the 6×6 grid so every cell holds a bat species and a colony size from 1 to 6.
How the cave works
- Each row, column and cave uses all six species and all six sizes once.
- Sonar clash: the same colony size can't touch edge to edge.
- Wing clip: the same species can't touch diagonally.
Three caves
- Roost · warm-up · 22 clues shown
- Twilight · standard · 16 clues shown
- Midnight · champion · 11 clues shown
The clock, score and combo run at the top; your best flight is kept on the cave screen.
Controls
Tap a cell, pick a bat, pick a size; scroll the dials to spin through them. Undo, Redo and Clear space sit under the grid; Reveal a bat gives a hint when you are stuck, and New cave deals a fresh puzzle.
