This version of Otocky is a beta release from April 15, 1986, indicating an earlier, unfinished version of the game. The "Beta" label implies that this release was not for commercial distribution but for testing and feedback purposes. Comparing the beta version to the final release would reveal changes made during development.  The game's specific mechanics and publisher would need further research.

Otocky (Japan) (Beta) (1986-04-15)

Othello (Japan) (DV 3, 5) (Disk Writer)