Perplexity is a video game created by Ian Collinson for the Acorn Electron and BBC Micro and published by Superior Software in 1990.

As the items can only be pushed, and not pulled, the main puzzle element of the game is a Sokoban-style transport puzzle as pushing certain items against a wall or in front of other objects means the level is impossible to complete.

The game was developed by Ian Collinson in 1989 and released for the Acorn Electron and BBC Micro in 1990 by Superior Software.

It's good to see Superior still supporting the Electron market, especially with games of this quality".

[2] BBC Acorn User said the game is a "classic for your collection, but you may end up smashing your Beeb in frustration".