June 02, 2011 (US)
Days of Thunder minis was presumably delisted from the PlayStation Portable in early July 2013 alongside the Xbox 360 version (Days of Thunder: Arcade) according to reporting from TrueAchievements.com. The PlayStation 3 version (as Days of Thunder: NASCAR Edition) was likely delisted around this same timeframe.
The games were not well received and could have been delisted due to low sales. However, given the timing alongside the delisting of The War of the Worlds, also published by Paramount Digital, it seems likely that the publisher’s transition away from console releases was the cause.
Both Days of Thunder minis and Days of Thunder: Arcade are extinct, and according to forum discussion in 2015, it may be impossible to re-download them even if they had been previously purchased. The only version that may be obtainable is Days of Thunder: NASCAR Edition on PlayStation 3 which was included in a retail Blu-ray combo pack along with the original 1990 movie.