Source 2

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Source 2 is a 3-D video game engine created by Valve in 2015 as an evolution of Source. It was implemented in Dota 2 during the Reborn Update in September 2015.

Features

• Lower latency and more responsive input.
• Increased performance limit to take advantage of higher end hardware.
• Improved audio and voice processing.
• New in-house physics engine, Rubikon.
• Native OpenGL support on all platforms.