Issue game of Wargame Japanese History #3.
The map covers the middle part of Japan from Osaka to Sendai and more precisely the important North Eastern realms of Uesugi and Date.
The game system is basically card-driven.
Because of the magazine's philosophy and designer's philosophy, the rule is simple and with very small amount of exception and special rule.
Though the East coalition (Ieyasu) leads the situation, if the West coalition can dominate the western part of the map, they'll get Hideyori Toyotomi on the battlefield and recover the situation. I think that this is due to the fact that "Tenchijin" describes the battle from the viewpoint of Mitsunari Ishida, West coalition coordinator. This viewpoint makes this game fresh among many Sekigahara battle games. This game was influenced by TV series "Tenchijin".
http://en.wikipedia.org/wiki/Tenchijin
Contents:
1 half map
80 large counters (20mm)
30 cards
6 pages rulebook