You are standing in a room and wish to reach a goal in a different room. The same is the case for your alter ego in a parallel universe. Can you  satisfy both your ego and your alter ego at the same time?

Update March 2024: Improved pixel art and level-select added.

  • Number of puzzles: 30
  • Average play time: 1h+
  • First published: Sept 2003 (original five mazes only)
  • Original:
  • Keyboard controls: arrow keys or WASD to move; [Z] to undo; [R] for restart; [ESC] for level-select.
  • Touchscreen controls: tap at the main menu; swipe to move; open the tab menu in the upper left to undo moves and restart.

Bought to you with thanks to Auroriax - maintainer of Puzzlescript Plus

puzzle concept  - Oskar van Deventer - 2003
puzzle designs - Oskar van Deventer & Erich Friedman - 2003/2021
puzzlescript implementation - Matthieu Haller & Andrea Gilbert  - 2021/2024

Rated 4.0 out of 5 stars
(2 total ratings)
Made withPuzzleScript
Tagsmaze, oskarvandeventer, PuzzleScript


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There's some good puzzle design at play here. However, having to juggle between two completely identical mazes that influence the other makes me go utterly cross-eyed. Perhaps if there was some way to be able to distinguish between one maze from the other, the game can be a lot easier to track.

As a little extra request: I'd love to see a Puzzlescript adaptation of the Threesome mazes. These room-based navigation puzzles remind me an awful lot of the Talos Principle - one of my favourite puzzle games ever. Oskar's Threesome are basically a three player version of that game.

Just something to think about, no pressure!

(1 edit)

Thanks for the feedback. I'm very happy to take requests for new ports to puzzlescript, it allows me to prioritise. Re Threesome... you can now try the old applet again here (playable if you use an applet-runner browser extension - as described in my FAQ). I've only just updated that page so if you've visited the page recently you might need to flush your cache, or give it another go later.  You should see a "java" coffee-cup (against the title) if the page is refreshed. 

did not find any use of parallel universe (i reach level 6, and i give up cuz boring), it just no different as two player in same room

My eyes keeps hurting when I play the game.

I beat all 30 levels.  I love your games.  Please keep making more!