Simpson Thacher & Bartlett represented Microsoft Gaming and Skadden, Arps, Slate, Meagher & Flom counseled Activision Blizzard on a $68.7 deal, the largest transaction of the year so far and the most expensive acquisition Microsoft has ever made.

Microsoft paid a fair premium on the buy, offering $95 per share, or 45% above Friday’s closing stock price for Activision Blizzard.