The easiest way to understand what a MOBA (albeit not the best name for the genre) is would be to play DOTA or LoL. Barring that, just understand there are a few things that make a MOBA game part of the genre in its purest sense, without delving into the realm of hybrids and such. Some staples that must be there for a pure MOBA are:
-a lane or lanes (pathways, usually 3) that lead from your base to the enemies’ base
-infinitely spawning minions that blindly march down said lanes, prioritizing attacking obstacles and other minions first, then player characters
-a main obstacle in each base that needs destroyed in order to win
-obstacles (usually called towers) along each lane that prioritize attacking minions first before concentrating on player characters and hitting them HARD (hence the importance of minions). Typically, all obstacles in a lane must be destroyed before the main objective becomes vulnerable.
-a “jungle” area (not always exactly a jungle with trees and such, but still called a jungle) that is around the lanes, serving as a shortcut to the different lanes and often housing enemy AI that, when defeated, offer various rewards
-a selection of playable heroes that have various roles to play, and typically have a basic attack, 3 special abilities, and 1 ultimate ability. These characters typically start at level 1, every single match, and progress to a set maximum level.
. There you have it! Of course, there are variations on everything in different MOBAs, but these are the absolute necessities needed to be considered a MOBA.
Many are confusing Overwatch and Battleborn for MOBAs because their hero characters work just like MOBA characters. In the case of Overwatch, that’s the only bullet point it hits. It’s got the characters, but certainly not a MOBA.
Regarding Battleborn, however, things get tricky. It has a PvP mode called “Incursion” that certainly handles like a MOBA; I’d call that mode a MOBA. It has a PvP mode called “Meltdown”, which resembles the Arena mode in a MOBA called Smite, but it’s much more of a hybrid, and not quite a MOBA in its purest sense. But then there is a PvP mode which plays like a standard FPS capture mode, and there’s a full campaign story mode, neither of which is a MOBA at all, except for MOBA style characters.
So, there are some that will call Battleborn a MOBA, and they will be correct. There are others that will say Battleborn is not a MOBA, and they will be correct. Fun stuff, huh?