US social games publisher Zynga (NASDAQ: ZNGA) has announced its full year financials for the 12 months ending 31 December 2011.

GAAP revenue was $1.14 billion, up 91 percent year-on-year.

The company made a loss of $404 million, compared to a profit of $90.6 million in FY10.

This was due to a charge of $510 million of stock-based compensation issued to employees.

In accordance with US Generally Accepted Accounting Principles (GAAP), this was unrecognised in the company accounts until the company's IPO in December 2011.

Excluding charges

Looking at the company from a non-GAAP (stripping out such one-off events) point of view, FY11 sales were $1.16 billion, up 38 percent year-on-year.

Income was $182 million, down 24 percent.

However, in terms of its Q4 figures, non-GAAP bookings were $306.5 million, up 26 percent year-on-year and up 7 percent sequentially.

Mobile blooming

Across all platforms, daily active users during the fourth quarter were up 13 percent to 54 million, while monthly unique users increased 38 percent to 153 million.

Mobile was a strong focus from the company with eight new games launched during 2011, compared to four Facebook games.

The company pointed to the success of Dream Zoo, Words With Friends and Zynga Poker during the period; all three were top 10 grossing iOS games during Q4.

Zynga said it had 15 million daily active users on mobile, up from 13 million quoted in December.

Cash in

The company ended the year with cash, cash equivalents and marketable securities of $1.9 billion, compared to $738.1 million a year ago - the difference mainly being due to the IPO.

Free cash flow was $102 million for the fourth quarter of 2011, compared to $86.4 million for the fourth quarter of 2010.

For the FY12 financial year, Zynga predicts non-GAAP revenue in the range of $1.35 billion to $1.45 billion.

[source: Zynga]