This is a quick first-person shooter demo called Test Shooter created by Gerald McAlister
using the Unreal Engine 4.
It was made over the course of a week, and was created in order to learn more about using the Unreal Engine 4. It is a very simplistic demo where you can walk around, shoot some simple rocks, and swim in a small pond.
You can play a very simple version in your web browser Here
Please note that this version is buggy due to lack of collisions and other things in the Unreal Engine 4 currently when exporting for HTML5.
You can download the full (without bugs) version of the game here