Overwatch is a unique action packed game
Overwatch is often compared to Team Fortress 2. However it is its own unique game with over 20 unique heros, with their own abilities and ultimate abilities. You can play a supporting role, a tank role or a damage dealing role.
The damage dealing roles is by far the most popular and has the largest roster of heroes to choose from. If you're aim isn't so great, Mei is perfect for you. If it is, Widowmaker would be best for you.
If you want to climb the ranks in Overwatch you should always use the most 'over-powered' heroes. So basically you should just play Doomfist, Genji or Widowmaker. There is a ranking system. The best players are in the top 500. Then there's the grand master, master and diamond players. Anyone below those ranks is below average (and therefore not real gamers).
Note: You might want to hold off purchasing Overwatch as Overwatch 2 is expected to be released soon.
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