Doritos Crash Course 2 (partially lost Xbox 360 platforming advert game sequel; 2013)
Doritos Crash Course 2 is an Xbox Live Arcade Game (XBLA), released for the Xbox 360 on May 8th, 2013. The game is a successor to the massively popular XBLA game Doritos Crash Course. It's a game that expanded upon the ideas of the first game and implemented many more. A big part of this game was the online requirement. Everything the user did was through this games servers, whether it was playing a course; alone or with others, tracking personal best times, or even just changing your settings. Because of this, when the servers shut down on October 15th, 2014, just over a year after the games initial release, the game would be deemed unplayable as a connection to the servers is required to even get past the first loading screen.
To this day, no one has found a way to access the games levels and menus. And what makes this harder is the game was delisted from the Microsoft Store on April 24th, 2014. The only way to access this game to any degree is to have a system that it was never deleted from, or to have an account that has purchased this game in the past, in which the game can be re-downloaded from the user's "Download History" in the settings.
No versions of the game exist online that allow play of these lost levels.