Sokoban (倉庫番 sōkoban?, warehouse keeper) is a type of transport puzzle, in which the player pushes boxes or crates around in a warehouse, trying to get them to storage locations. The puzzle is usually implemented as a video game.
Sokoban was created in 1981 by Hiroyuki Imabayashi, and published in 1982 by Thinking Rabbit, a software house based in Takarazuka, Japan.
Sokoban 2 (1984) (NEC PC-8801) with 50 levels.
Source: Wikipedia, "Sokoban", available under the CC-BY-SA License.
Sokoban 2 was released on the NEC PC-8801 in 1984; it was the second computer game to use the Sokoban box pushing puzzle. It had 50 levels.