 The gameplay in One follows a branching plot line which offers pre @-@ determined scenarios with courses of interaction , and focuses on the appeal of the six female main characters by the player character . The game ranked several times in the national top 50 for best @-@ selling PC games sold in Japan . A sequel loosely based on One titled One2 : Eien no Yakusoku was produced by BaseSon , another brand under Nexton , and was released in April 2002 . 
