Initial D Arcade Stage 4 (イニシャルD アーケード ステージ 4) is a racing game developed by Sega. It is the sequel to "Initial D Arcade Stage Ver.3". This version has been heavily updated compared to its predecessors. The game underwent location testing from October 21, 2006 to October 30, 2006 in game centers in Tokyo, Osaka, and Aomori, Japan, and was released on February 21, 2007. The international version was released in July 2007 which is named Initial D 4. This is the last installment of the series to be officially released in Western countries.