Initial D: Ryosuke Takahashi's Fastest Typing-theory

Initial D: Ryosuke Takahashi's Fastest Typing-theory is a typing game based on Initial D First Stage. It was followed by a sequel based on Second Stage.

It features footage from 5 of the major battles from the series, with each battle acting as its own level. 4 of the battles are available from the beginning, with the final battle against Ryosuke Takahashi becoming unlocked after the previous levels have been completed.

Players have to type out the text that is shown to them on the screen to progress through the race, with errors lowering the players HP. If the HP bar runs out, the player crashes and has to start the battle over.