Middleware creator Unity Technologies has announced its registered userbase has passed the 500,000 mark, doubling in size in just over six months.
The Unity development platform is particularly popular on Web and smartphone formats, with the company claiming 150,000 active monthly users - amounting to over a million hours of game development every month.
Downloads for the Unity browser plug-in have also now surpassed 60 million and the platform has become the most widely-used middleware in games for the Apple App Store. More than 1,500 iOS Unity titles are currently available, including key titles such as Battleheart, Gears, Samurai II, Skee-Ball and Snuggle Truck.
Unity for Android became available in March of this year, with more than 100 titles on the Android Market. Web titles using the technology include Bigpoint's Battlestar Galactica Online, Electronic Arts' Tiger Woods PGA Tour Online, and Gazillion's Marvel Super Hero Squad.
In 2010 the company introduced the Unity Asset Store, a digital marketplace where developers can share and sell assets. The store currently has more than 630 ready-to-use packages, with some top-sellers earning more than $15,000 per month.
In a separate announcement today Unity has also been named the number one game engine by readers of Game Developer Magazine, for both traditional and casual titles.
"The combination of Unity's powerful yet approachable technology has resulted in it being the #1 game engine used for both traditional and casual games," said David Helgason, CEO of Unity Technologies. "It's exciting to see how our users build on top of Unity to create mind blowing innovation of their own."