It will be the twenty-first game in the Test Drive series, the first title in the series since 2012's Test Drive: Ferrari Racing Legends, and the third game in the franchise's open world Unlimited reboot, following 2011's Test Drive Unlimited 2. In 2018, Bigben announced the acquisition of French game developer Kylotonn, with Roman Vincent, president of Kylotonn suggesting they were working on the next installment of Test Drive. In April 2020, Nacon filed a trade mark to the Intellectual Property Office for Test Drive Solar Crown, the last two words referring to the Solar Crown in-universe racing competition series featured in 2011's Test Drive Unlimited 2. On 3 July 2020, the official Test Drive Twitter account tweeted a twelve-second video clip of a crown-shaped logo with the letters "SC" in it forming, announcing a full reveal during the Nacon Connect video event on 7 July. Based on copyright text at the end of the video, the game will feature vehicles from Bugatti, Dodge, Ferrari, Koenigsegg, Lamborghini, and Porsche. The game will feature a 1:1 recreation of Hong Kong Island as revealed from the Nacon Connect trailer, and will run on WRC 8's framework and handling model. Creative director Alain Jarniou, who worked on the first two Test Drive Unlimited games, stated in the Nacon Connect video that Unlimited Solar Crown has only been in development for "several months" by that time. The trailer shows an Aston Martin DB11 and a customized Land Rover Range Rover SVR, along with the hands of a male driver and a female driver driving those respective vehicles and gambling in a casino, indicating that the casino feature found in previous Test Drive Unlimited games will return.