Seriously. Maybe you don't usually read comic books. Maybe you don't even care about them (why would you ever be interested in this game, duh? :P). But Tom Taylor's prequel to Injustice: Gods Among Us is brutal. Terrific. Jaw-dropping.
It's hard to admit that there's a better (or worse, actually) Joker out there right now than Scott Snyder's and Greg Capullo's (who are currently writing and drawing the Death of the Family story arc, respectively), but Taylor's gives them a run for their money. If Snyder's Joker is methodical and precise, striking like a surgeon holding a scalpel, Taylor's is sheer destructiveness unleashed. If you want to understand what is happening in this game, I strongly recommend you to pick up the digital prequel. You can pick individual issues for $1, or wait for the paperback collection. Either way, you won't be disappointed.