The Gekai is an Adventure game, developed by Vingt-et-un Systems and published by D3Publisher, which was released in Japan in 2004.
#1Simple 2000 Series Vol. 2: The Party Game
#2Simple 2000 Series Vol. 1: The Table Board
#3Simple 2000 Series Vol. 12: The Quiz 20000 Mon
#4Simple 2000 Series Vol. 82: The Kung Fu
#5Ultimate Mind Games
#6Simple 2000 Series Vol. 15: The Rugby
#7Simple 2000 Series Vol. 14: The Billiard
#8Simple 2000 Series: The Renai Adventure - Bittersweet Fools
#9Simple 2000 Series Vol. 32: The Sensha
You’re hereSimple 2000 Series Vol. 58: The Gekai
#11Simple Series 2000 Vol. 90: The Oneechanbara 2
#12Simple 2000 Series Vol. 73: The Saiyuki Saruden
#13Simple 2000 Series Vol. 93: The Unou Drill
#14Car Racing Challenge
#15Simple 2000 Series Vol. 104: The Robot Tsuku Rouze! - Gekitou! Robot Fight
#16Simple 2000 Series Vol. 94: The Akachampion
#17Simple 2000 Series Vol. 109: The Taxi 2
#18Simple 2000 Series Vol. 117: The Zerosen
GameSimple 2000 Series Vol. 71: The Fantasy Renai Adventure - Kanojo no Densetsu, Boku no Sekiban
GameSimple 1500 Series Vol. 81: The Renai Adventure - Okaeri!GameSimple 2000 Series: The Renai Adventure - Bittersweet Fools
GameSimple 2000 Series Vol. 13: The Renai Adventure 2 - Garasu no Mori
GameLast Escort 2: Shin'ya no Amai Ibara