“Haunted Mirror Maze” puzzles were invented by me, David Millar, which were based on Mirror Puzzles by Erich Friedman. In the puzzle, you must identify the monsters in a grid representing a mirror maze by using counts of monsters seen from the edge of the grid, along with the knowledge that vampires have no reflections and ghosts can only be seen in mirrors.
There is not currently an interactive way to play the majority of my hand-written puzzles, although some newer puzzle sheets on the blog link to a Penpa+ player for those specific puzzles.
Steffen Bauer created a generator and implemented the puzzle as a game in Simon Tatham's Portable Puzzle Collection, calling it Undead. It can be played online as well as in any of the applications porting the collection to various operating systems and mobile devices.
I am currently working on a PICO-8 port of Haunted Mirror Mazes and hope to have it ready by Halloween 2026.
Previously, this page featured interactive versions of the puzzle written in Java (created by Otto Janko) and Flash (created by Rosiana Dharmadi), but most modern browsers no longer support those. There was also a browser-based player for the puzzle created by Pedro of Pedros Works, but his site is no longer live at this time.
There was also previously an iOS game made by Luke Schutt and myself, but it has been discontinued for many years now.
Aside from here under the blog's haunted tag, you can also find a bunch of Haunted Mirror Maze puzzles in my self-published book Paranormal Puzzle Pack, available as an eBook or spiral-bound softcover.
You can also play some procedurally-generated Haunted Mirror Maze puzzles from Krazydad featuring a coloring sheet base illustrated by Catherine Yi.
Dr. David Nacin and I had some back-and-forth playing with the idea of a variant where the mirrors in the grid are not given, and we posted some examples on the Perplexible blog.
Additional variant concepts have been shared with me by Wagner Gerlach of Clube do Tabuleiro de Campinas where this puzzle genre has gained a following and inspired some of the students and teachers to introduce new mechanics.