Undead Mirror Maze
Undead Mirror Maze fills a haunted house with angled mirrors and asks you to work out which monster hides in every empty room. Each square holds a ghost, a vampire or a zombie.
Its origins trace to David Millar's Haunted Mirror Maze, and Steffen Bauer adapted it under the name Undead for the collection by Simon Tatham. It runs in your browser with nothing to install, and the cartoon monsters are drawn by the game itself.
How to play Undead Mirror Maze
Totals above the grid tell you how many of each monster to place. Numbers on the border count the monsters you would see peering in from that spot, following the line of sight as it bounces off each two-sided mirror.
Each monster shows up differently. Zombies are always visible. Vampires appear only before your gaze hits its first mirror, since they have no reflection. Ghosts appear only in reflections, after at least one bounce. A monster seen twice on one path counts twice.
Select a square, then choose a monster from the top row or press G, V or Z. Right-click a square to add pencil marks for several possibilities. When every square is filled and all counts agree, the puzzle is solved.
Controls
| Action | Keyboard | Mouse | Touch |
|---|---|---|---|
| Place a monster | Arrow keys, then G, V or Z (or 1, 2, 3) | Select a square, then click a monster | Tap a square, then a monster |
| Clear a square | Backspace or 0 | Click the same monster again | Tap the same monster again |
| Pencil mark | Enter for pencil mode, then a letter | Right-click, then a letter or monster | Press and hold, then a monster |
| Grey out a finished clue | — | Click the clue | Tap the clue |
| Undo, redo, new puzzle | U, R, N | Menu bar buttons | Menu bar buttons |
Tips
- A 0 clue is a gift. Every square before the first mirror on that path is a ghost, and every square reached only after a mirror holds a vampire.
- Paths that never hit a mirror are simple: only vampires and zombies count, and ghosts are invisible.
- Trace each sightline slowly, bounce by bounce, before you trust your count. One missed mirror changes everything.
- Watch the totals. When one monster type is used up, the remaining squares narrow quickly.
- Pencil in both options when only two monsters remain possible for a square, then return once a nearby clue decides it.
- Press C to change how the clue counts are displayed if the default style is hard to read.
If you like Undead Mirror Maze, try these
Black Box LasersBeams bouncing around a grid return here, used to find hidden balls from where the rays exit.
Skyscraper SightlinesVisibility clues on the edges line up with this, only with tower heights blocking the views.
Questions
Why can I not see vampires in mirrors?
That is the core rule: vampires have no reflection, so they only count on the straight part of a path before any mirror. Ghosts are the reverse and only show up in reflections.
Can I switch the monster pictures to letters?
Yes. Press A to swap between pictures and letters, or change it in Preferences. Some players find letters easier to scan on big grids.
Does Undead Mirror Maze work on touch screens?
It does. Tap a square and then a monster at the top, or press and hold a square to enter pencil marks.
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