Oubliettes

Oubliettes is a logic puzzle. Each grid hides a dungeon: work out where every wall is from the clues, with no guessing needed. Every grid has exactly one solution. Rules

• The numbers along the edge give the number of walls in each row and column.
• Monsters and chests are never walls.
• Every monster sits in a dead end, and every dead end holds a monster.
• Every chest is in a treasure room: 3×3 open cells, one chest, one opening.
• Elsewhere, hallways are one cell wide and the whole dungeon is connected.

• Campaign: 250 levels that are the same for everyone, in five difficulties (6×6 to 14×14), all open from the start.
• Endless: randomly generated grids in the difficulty you pick.
• Daily: one dungeon a day, open on its day only.
• Tutorial: lessons you solve step by step, one technique at a time, then practise alone.
• Hints that teach: where to look, then why, then which cells.
• Share a solved grid as text, without its solution, and dig the one a friend sent.
• Drag to fill a row or column, undo and redo, progress and history saved after every move.
• Screen reader support, a magnifier and two-finger zoom for large grids, plain digits and a calm mode without animation.
• Endless grids are generated on the device. No ads, no tracking, no account.
• Original medieval music loops and sound effects, with volume sliders.