Two social game developers have been sharing stats on their most popular mobile games, including the role played by Facebook’s social graph in their growth.

Wooga says its Diamond Dash game (pictured) has now been downloaded around 30m times on iOS alone, and that it’s currently adding around 100k new users every day. The developer notes that 68% of players have now connected the game to their Facebook accounts, up from 28% in late 2011.

“Today half of our game designers, engineers and artists are working on new mobile titles that should redefine what players expect from social mobile games,” says CEO Jens Begemann. Diamond Dash will soon be ported to Android.

Meanwhile, Facebook itself has shared some stats on Buffalo Studios’ Bingo Blitz game, which is available on iOS, Android and Facebook’s website.

“80% of the game’s mobile revenue comes from Facebook-connected players,” writes Facebook’s Sara Brooks. “Adopting new Facebook features with fresh content has kept almost 25% of current monthly users playing for more than a year.”

According to social games analytics site AppData, Bingo Blitz has 2.7m monthly active users, and 740k daily active users. Meanwhile, Diamond Dash has 20.2m MAUs and 3.7m DAUs.