Zynga Inc (NASDAQ:ZNGA) has announced the biggest ever game play update to its flagship title, Farmville 2. The so called “Appaloosa River” expansion will be rolled out to players of the social game for free in September. Following the Zynga Inc (NASDAQ:ZNGA) “freemium” strategy, the expansion will be available to players early if they’re willing to spend on it.

Zynga FarmVille 2

Farmville 2 is, like its predecessor, the most important social game in the Zynga Inc (NASDAQ:ZNGA) catalog. The game has around 25 million active monthly players. That number has been falling through 2013, but the company hopes the massive expansion attracts players back to the game.

Farmville 2 expansion

The expansion to Farmville 2 will see the Appaloosa river overflow, and users will be able to plant crops in the water for the first time by accessing docks at the right hand side of the screen. The water-grown plants will include Indian Lotus, Cranberries and Wasabi, among others. The expansion will give users access to six new water plots in which to plant the crops.

The new crops do not need to be watered, but they will need to be dried after harvesting. The water crops bring with them new recipes; users will be able to combine the new plants with others to make more profitable products. New animals in the expansion include water buffalo and ducks, which can be raised by the player.

Zynga share prices decline

Zynga Inc (NASDAQ:ZNGA) stock did very well in the first couple of months of 2013 as investors looked for higher, and steadier, revenue from the company on the news that it was moving into online gambling. The gambling business hasn’t taken off for the company quite yet, and that shows in the company’s recent stock movements.

In the last month Zynga Inc (NASDAQ:ZNGA) stock has fallen by around 3.5%, while the firm’s stock is down more than 27% from its peak on March 12th. Zynga Inc (NASDAQ:ZNGA) stock appears to be in a fugue. The firm’s stock declined sharply after an earnings release in July, and continued a slow descent since that release.

Few investors seem to have confidence in Zynga Inc (NASDAQ:ZNGA) as a social gaming company. The business is expensive and success is rarely guaranteed. The company has a couple of prominent pieces of intellectual property, but is having difficulty establishing new businesses on the same scale as their older works.