The main way it ruined DC Comics was that it threw the established order into chaos. It made it hard for new readers to jump in and for long-time fans to keep up. Plus, it seemed to sacrifice character development for the sake of a big event.
It's hard to give an exact number. There were quite a few comics involved in this storyline, but it varies depending on how you count related tie-ins and spin-offs.
The 'Crisis on Infinite Earths' graphic novels are special because they redefined the DC Comics multiverse. It brought together numerous characters from different Earths in the DC universe, creating epic crossovers and changing the status quo of many characters' storylines.
Crisis on Infinite Earths in the comics concludes with a battle of epic proportions. Heroes unite from different realities and, in the end, the fabric of the multiverse is altered in ways that have long-lasting effects on DC Comics.
Well, in 'Crisis on Infinite Earths DC Graphic Novels', there's a complex plot involving the Anti - Monitor. He's a major threat and is causing chaos across the multiverse. The heroes must figure out a way to defeat him. Different versions of well - known heroes interact and sometimes clash as they deal with this overarching threat. For example, Superman from different Earths may have different abilities or outlooks, but they all have to work towards the common goal of saving the multiverse.
In Crisis on Infinite Earths comics, not many Supermen die. Usually, it's a limited number, and the focus is more on the overall story and multiverse chaos.