Takeda is a Personal computer game based on the life of Takeda Shingen. It is a real-time tactics game.
Takeda was developed by Magitech Corporation, but it was vastly unpopular due to its high difficulty to control units and manage an army. However, this is disputed by many whom believe the control scheme was typical for an RTS of the time.
Magitech Corporation also has produced a sequel, Takeda 2, which incorporates more aspects of the individual development of the generals, aspects such as leadership, etc.
Takeda 3 was completed on February 2009.
Source: Wikipedia, "Takeda (video game)", available under the CC-BY-SA License.