Wish you could run one of those awesome Unreal Engine 4 tech demos on your own hardware instead of watching its lossy, pixellated video-grabs on YouTube? Well, now you can.

To begin with, it doesn't come with an installer. You have to extract its files into a folder, and manually edit its settings INI file to specify resolution, window behaviour, and other settings. You then have to install VC++ 2013 runtime if you don't already have it (the redistributables are included in the archive), and then run the demo from the relevant batch file. Unreal included both 32-bit and 64-bit executables. Only an Alt+F4 closes the thing down (there's no in-demo UI). There's no internal benchmark, and you're left to use third-party frame-rate loggers.

Enjoy!