Flashpoint was a 2011 crossover comic revolving around Barry Allen/The Flash going back in time to prevent his mother's murder, unaware of the consequences that would be in store (SPOILERS AHEAD):
1.)Bruce would be murdered instead of his parents, Martha would suffer an emotional breakdown and would become the Joker, and Thomas Wayne would become Batman.
2.) Kal-El would never meet the Kents, and would spend his life in a lab.
3.) The Atlanteans and the Amazons would be at war with each other, destroying the world along the way.
4.) The Flash wouldn't have his super-speed.
All of the details from the comic were adapted beautifully, the acting was done perfectly, and this is the best DC animated film since The Dark Knight Returns.
1.)Bruce would be murdered instead of his parents, Martha would suffer an emotional breakdown and would become the Joker, and Thomas Wayne would become Batman.
2.) Kal-El would never meet the Kents, and would spend his life in a lab.
3.) The Atlanteans and the Amazons would be at war with each other, destroying the world along the way.
4.) The Flash wouldn't have his super-speed.
All of the details from the comic were adapted beautifully, the acting was done perfectly, and this is the best DC animated film since The Dark Knight Returns.