Overwatch’s first anniversary event has great content with no real theme

Bust out the cake and candles … er, candle, I guess. Just one candle.
Overwatch is celebrating its first anniversary, having come out for PlayStation 4, Xbox One, and PC on May 24, 2016. The team-based shooter already has over 30 million players, an impressive number for a paid game in only one year. And Blizzard is celebrating with another seasonal event, giving players new play modes and limited-time cosmetics.
But this anniversary event is unusual for Overwatch. Past celebrations have