A video game developed by Theoretical Science Group (TSG) at the University of Tokyo in 1979.

The arcade version (table-type version) was released on October 19, 1979.

It gained popularity and acclaim at game centers around the country.

​

The aliens that invaded Heian-kyo (the capital city Kyoto in 9th century),

the Kebiishi (police) annihilated them by digging pitfalls, waiting for the intruders to fall into, and then filling them in.

This is a strategic game in which trap placement strategy is important to victory.

​

Later, PC versions, game console versions, and dedicated game consoles were also developed and on the market.

He also appeared in episodes 6 and 7 of Mitsuru Sugaya 's manga " Game Center Arashi ."

 

Some of its features can be said to be the origins that influenced subsequent games.

- It is a maze-type game

- It is a game where you dig and fill a pitfall

- It is a strategy game in which you eliminate enemies by placing and filling traps rather than attacking them.

- There is a mode where two players can corporate together

- The setting is in the Japanese style of "Heian-kyo" and "Kebiishi".