Epic Games and Mozilla provided a sneak peek of Epic's Soul and Swing Ninja demos, running in Firefox at near-native speeds. This video is the first glimpse of Unreal Engine 4 running on the Web without plugins:





Mozilla and Epic Games have already showed the power of the Web as a platform for gaming by porting Unreal Engine 3 to the Web and showcasing Epic Citadel, using asm.js, a supercharged subset of JavaScript pioneered by Mozilla. Mozilla says that n optimizations have increased the performance of Web applications using asm.js from 40% to within 67% of native, and expects it to get even faster.

"This technology has reached a point where games users can jump into via a Web link are now almost indistinguishable from ones they might have had to wait to download and install," said Brendan Eich, CTO and SVP of Engineering at Mozilla. "Using Emscripten to cross-compile C and C++ into asm.js, developers can run their games at near-native speeds, so they can approach the Web as they would any other platform."

Unreal Engine 4 is designed to scale from PC and console to mobile and the Web.

More information as well as products in action will be provided at GDC.