Extra Modes
A lot of multiplayer games share the same slate of modes for players to go through. You’ll get a deathmatch, Capture the Flag (or something like it), maybe a Horde mode, and certainly an objective mode. They’re all fine and good, but aside from those latter two, cooperation isn’t really encouraged. Sure, you’re supposed to be working with your teammates, but you also could theoretically manage to Capture the Flag and make it to your base on your own just by being careful while the rest of the team is shooting people.
When Overwatch first released, all it had to its name were two modes that emphasized teamwork over a kill count. Since its May release, Blizzard has decided to have some fun with the modes by incorporating the characters into play with one another. Games like Halo have done this before with Grifball, but this takes it one step further, thanks to mixing the strengths of different heroes and allowing each player to make up for a teammate’s weakness. They also aren’t afraid to just get weird with it, as the surprisingly addictive Lucio Ball has shown.