Save for one very integral bit of design philosophy,
Overwatch could be described as the most bog standard shooter to come around in a long time. Luckily, that design philosophy makes the game anything but standard. You aren’t cast as a faceless, nameless grunt and there’s much more to differentiate you from your comrades than your loadouts.
Overwatch’s battlefields are manned by very specific individuals with very specific styles, abilities, and personalities. And the magic of the gameplay is in watching these heroes clash.
It wouldn’t do to fill this preview space with dossiers on each of Overwatch’s playable characters. Instead, simply take my word for it that all of the characters occupy a certain role. Some are offensive, some defensive. Some are relegated to support roles, while others are capable of long-range combat. Any strategic need can be satisfied by one of the over twenty heroes in Overwatch.