Dōsei is a Japanese adult social simulation game developed by Tactics, a brand of Nexton. It was released on May 23, 1997 for Windows PCs, the same day as To Heart by Leaf. The gameplay in Dōsei follows a branching plot line which offers pre-determined scenarios with courses of interaction, and focuses on the appeal of the sole female main character Manami Minase. The player assumes the role of protagonist Masaki Yamada who is living with Manami shortly after they have graduated from high school. Masaki earns money at a job, and when he returns home will have sex with Manami often; this process of work in the day, and sex at night repeats many times throughout gameplay.

Moon is a Japanese adult horror visual novel developed by Tactics, a brand of Nexton, released on November 21, 1997, playable on Windows PCs. The game was described by the development team as a "Reaching the Heart AVG" . The story follows the protagonist Ikumi Amasawa, a teenage girl who joins a mysterious organization called Fargo in the hopes of discovering why and how her mother died, who was a member of the same group. The gameplay in Moon follows a branching plot line which offers pre-determined scenarios with courses of interaction, and focuses on the three female main characters. The game ranked twice in the national top 50 for best-selling PC games sold in Japan.