It probably went something like this: Zynga is in the hit-driven games business. Engagement around games has shifted to mobile, and Zynga is weak in mobile. Draw Something could have potentially been a new big franchise, and given the current state of affairs at OMGPOP, was probably already up for sale. $200M is not that much money to a company like Zynga, especially when they are handing out stock and not all cash. Add that to a little hype, and you've got the makings of a deal.