Koukiatsu Boy (高気圧ボーイ, Kōkiatsu Bōi, lit. "Hyperbaric Boy") is a role-playing and card battle game released for the Game Boy on July 2, 1998 in Japan, developed by Konami Computer Entertainment Shinjuku and published by Konami.
Plot[]
The story is about a high-pressure army fighting to take back a place that had been controlled by a low-pressure army. A distinctive feature of the game is that the terms that appear in the game are related to weather forecasts.
Gameplay[]
While playing monster cards and using reinforcement cards, the high pressure army wins if the opponent's barometric pressure (hPa) reaches 1000 or more, and if it is less than 1000, the low pressure army wins. The winner is the one who wins three out of five matches. If your ally wins, you can capture the opponent's land, and the story progresses by capturing the opponent's base.