Sokoban PC-8801

_{Published: 2022 May 22}

The first commercial Sokoban game was created in 1982 for PC-8801 and was distributed in a cassette tape format in 1982.

The source code of the game was also included in the 1987 book "THE 倉庫番" (pages 117-122).

This game has 20 levels, but only the first 10 levels used the main Sokoban mechanics. Levels 11 to 20 adopted a secret mechanic: the player can break some predefined walls by pressing them from a certain side, leaving a free space in their wake.

The breakable walls did not differ visually from ordinary walls, but breaking them is essential to solving the level.

Curiosity: The cassette tape for this game is physically blank on side B, but reading the content reveals the entire game is present on both sides!