SAN FRANCISCO — Zynga has been on a monumental losing streak. Hits have been rare, profits nonexistent and crucial employees are fleeing.
The story of the company, which developed the notion of social gaming and persuaded tens of millions of people to try it out on Facebook, illustrates how suddenly the fortunes of hot Internet companies can shift. Two years ago, as Zynga was first being talked about for a public offering, it was said to be worth $20 billion.
By the time the offering took place, a little over a year ago, it was for about $7 billion. And Zynga has spent most of the time since then sliding downhill. The value of the company Tuesday, as it released mediocre but nevertheless better-than-expected fourth-quarter results, was about $2 billion.
In the next few months, Zynga faces a critical test that will determine if even that sum is excessive: can it successfully put its most popular Web games, starting with Farmville, on mobile devices?