Longshot is not based on a true story. It's a work of fiction that was developed to engage and captivate the audience through an invented narrative and fictional characters.
Madden Longshot isn't based on a true story. It's a concoction of imaginative elements put together to captivate players. There's no real-life basis for the plot or the characters in it.
It's not clear which specific 'Caine' is being referred to here. It could be the character from 'Kung Fu' or some sort of made - up or less - known reference to a character in the world of 'Pulp Fiction' that has some connection to the idea of 'Caine' from 'Kung Fu'.
The 'Madden 19 Longshot full story' is mainly about the journey of a young football player trying to make it big in the NFL. It follows their trials, training, and the challenges they face both on and off the field.
Well, 'The Caine Mutiny' is fictional. The author created the plot and characters to tell an engaging tale rather than basing it on real events. But it might draw inspiration from various real-life situations and themes.