All the games you played...

In the song "Set Fire to the Rain," Adele sings about a man who manipulated her in a relationship.  One part of the song says:

"But there's a side to you
That I never knew, never knew.
All the things you'd say
They were never true, never true,
And the games you play
You would always win, always win."

These lines perfectly describe Emilia's feelings toward Iago when she discovers that Iago lied to Othello about Desdemona.  This song is full of bitter emotion toward another person; Emilia is also bitter after finding that her husband basically caused the death of her best friend.  Iago constantly played games throughout the entire play.  He only told the truth when he was alone on stage.  Iago "won" his games because he caused the death of his own wife, Othello, and Desdemona, destroying any power that Othello had over himself.  I believe the only reason Iago manipulated others was so that he could feel powerful.  Although Iago does not replace Cassio, he is able to take out Othello who was admired by the Senate.  I think the creepy smile at the end of play really explains everything...