acquisition. As of 2016, the digital soundtrack rights for the Thunder Force series will still be handled by Twenty-One Company through the Twenty-One Technosoft division. Factors that influenced the acquisition included the former Technosoft president stating that they did not want the Technosoft brand to desist, and so handing over the intellectual properties to Sega was the only other option. Sega and Technosoft also had an established collaboration during the Genesis/Mega Drive era and so this pre-established relationship was also a factor when acquiring the brand rights to Technosoft titles. Notable releases Thunder Force The company's most commercially successful franchise was the Thunder Force series. It was a series of scrolling shooter video games. The series began with the original Thunder Force in 1983. The games are known by fans of the genre for their hardcore appeal, pleasing graphics, and generally well composed synthesizer-based chiptune music soundtracks. The series' first game, Thunder Force, appeared in 1983 on a variety of Japanese computers, such as the Sharp X1, NEC PC-8801 mkII, and FM-7. Technosoft also released a level editor, or game creation system, entitled Thunder Force Construction, for the original game on the FM-7 computer in 1984. Since Thunder Force II, the majority of installments in the series appeared on the Mega Drive console, where the series gained much of its popularity. The most recent entry was released on PlayStation 2. Plazma Line Plazma Line (プラズマライン) is a first-person space racing game released by Technosoft for the NEC PC-8801 and FM-7 computers in 1984. It is notable for being the first computer game, and home video game in general, with 3D polygon graphics. The objective of the game is to race through outer space in a first-person view while avoiding obstacles (rendered in 3D polygons) along the way. It also featured an automap radar to keep track of the player's position. The game was created by Kotori Yoshimura, who also created the original Thunder Force. Yoshimura later left the company in 1985 to start the development studio Arsys Software along with fellow Technosoft member Osamu Nagano. Herzog Herzog (German: "Duke") is a strategy video game released by Technosoft in Japan for the MSX and NEC PC-88 computers in 1988. It was a real-time tactics and tactical shooter game with real-time strategy elements. The series' best known entry is the Sega Mega Drive (Genesis) title Herzog Zwei (1989), which is sometimes regarded