Earlier this week, Unity Technologies announced it had recently closed $400 million in new funding from Silver Lake Partners, a private equity firm focused on growth capital investments in technology industries.

Unity is best known for providing the game engine most mobile game developers use to speed up their development cycle. In recent years, Unity has expanded beyond mobile platforms to support visual and interactive development for PCs, consoles, the web, home entertainment systems, and embedded systems. Moreover, Unity has become more than an engine by now providing a full suite of developer tools and resources, including the Unity Asset Store, Unity Analytics, and Unity Ads.

Unity has raised a total $689.2M over 6 rounds from 11 investors, according to CrunchBase. Unity has managed to grow a leadership share of its market despite competition from Unreal, Cryengine, Autodesk, and recently, Amazon's Lumberyard.

Unity will use the new funding to build tools for pervasive 3D visuals and expand its content and application development tools for augmented and virtual reality, such enabling combined real-time CG and interactive elements in 360-degree video content. Unity's previous investors valued the San Francisco-based company at $1.5 billion but now values it at $2.6 billion.