Undead Mirror Maze Unblocked

Undead Mirror Maze is a haunted-house logic puzzle with a clever twist on line of sight. The grid is scattered with two-sided diagonal mirrors, and every remaining square houses one of three monsters. Each number on the border is the monster count an observer at that spot would see, with your gaze bouncing off each mirror it meets. Since vampires have no reflection and ghosts only appear in one, the same row can show very different counts depending on the mirrors. Steffen Bauer wrote it for Simon Tatham’s collection, basing it on a puzzle by David Millar. It plays unblocked here.

Who Shows Up Where

A row of totals at the top says how many ghosts, vampires and zombies live in the house. No square may be left vacant.

Each clue follows a path. Start at the clue, look into the grid and travel along the row or column. When you hit a mirror, turn 90 degrees the way the mirror leans and keep going until you leave the grid. Count the visible monsters along that whole path:

• Zombies are counted everywhere on the path.
• Vampires count only on the leg that runs up to the first reflection.
• Ghosts count only once the gaze has bounced.

A square that the path crosses twice can be counted twice. Get every border number and every total right and you have solved it.

Undead Mirror Maze controls

To do this	Keyboard	Mouse	Touch
Put a monster in a square	Arrows to the square, then G, V or Z (or 1, 2, 3)	Click the square, then a monster at the top or its letter	Tap the square, then a monster at the top
Empty a square	Backspace or 0	Select it and click the same monster again	Select it and tap the same monster again
Add or remove a pencil mark	Enter for pencil mode, then a letter	Right-click the square, then a letter or monster	Press and hold the square, then tap a monster
Grey out a clue you've satisfied	—	Click the clue	Tap the clue
Swap pictures for letters / change the count display	A / C	—	—
Undo, redo, new puzzle	U / R / N	Undo move, Redo move and New game buttons	Undo move, Redo move and New game buttons

Haunting Tactics

Start with the easy information, then grind through the bounces.

1. Hunt for zeros. A 0 means no zombies anywhere on that route, ghosts on the unreflected stretch, and vampires beyond the bounce. It is the strongest clue on the board.
2. Use paths with no mirrors. When a gaze runs straight through with no reflection, ghosts on it don’t register at all.
3. Trace slowly. Follow each path square by square. Pointing at the screen with a finger or the cursor really helps on 7x7 boards.
4. Lean on the totals. When just one kind still has some left to place, the remaining empty squares are that type. You can press C to switch the totals to “left to place”.
5. Pencil pairs. Many squares narrow to two options early. Note both, then return after another clue decides.
6. Retire finished clues. Clicking a satisfied clue greys it out, so your eye moves to what still needs work.

Why It Is a Great Pick

Most grid puzzles ask you to count in straight lines. This one makes you think about how the same square looks from different angles, which feels fresh even if you play a lot of logic games. The cute monster drawings help, and you can swap them for letters with the A key if you prefer.

If you enjoy sight-line logic, Range Shading Puzzle is a cleaner, black-and-white take on counting what squares can see. Laser lovers should also try Black Box Lasers, where you fire lasers into a dark grid and work out where hidden balls sit.