Forza Horizon 3

Forza Horizon 3
Developer: Playground Games Publisher: Microsoft Studios Platform: Windows Released internationally: September 27, 2016 This game has unused playable characters. This game has uncompiled source code. This game has unused models. This game has debugging material. This game has a prototype article

Forza Horizon 3 is the third installment of the Forza Horizon spin-off series where this time players get to drive around Australia. Which is the first time you get to drive on the left side of the road only to have everyone go against traffic anyway. Unfortunately, four years after the game was released it was removed from the Microsoft Store due to it reaching its End Of Life status.

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Prototype Info

Unused Performance Class

Certain players on Reddit managed to come across a handful of cars with an R 999 performance index even though there are no cars that you can buy or modify to such a class, in fact the only games that use this class are the Forza Motorsport games on the Xbox One. Another instance of the class is in the tuning setup menu specifically when using the search function and all you have to do is select Car Class and scroll past X.

(Source: ENZO_1999 (Crown Vic Screenshot))

Mountain Dew Car Pack Leak

During the release of the Mountain Dew Car Pack they found 11 cars that at the time weren't used and after the content updates ended a total of five went completely unused. The sources mentioned that it was because of the Dev Build that they managed to find this information and that cars have engine sounds though there's currently no way to check this. The cars in question are:

Car Name	Internal Filename	Notes
1937 Bugatti Type 57S	BUG_Type57S_37
1970 Citroen 2CV	CIT_2CV_70	Was later introduced in Forza Motorsport 7 through the Totino's Car Pack DLC.
2013 MG MG3	MG_MG3_13	Was later introduced in Forza Horizon 5 through the Series 4 Update
1988 Peugeot 405 T16	PEU_405T16_88
1965 Toyota Sports 800	TOY_Sports800_65	Was later introduced in Forza Horizon 5 through the Series 17 update

(Source: GTPlanet)