While messing around with the first person template in UE4, I created a simple enemy AI that would follow the player throughout the level until it reaches the player.
This gave me the idea to have a sound attached to this enemy so that you could hear where it is coming from.
Adding to this, I thought that having the sound not only get louder, but have more of a stereo presence as the enemy gets near would allow the player to locate the enemy realistically through sound. I also figured out a way to have the audio trigger an event (stop in this case) on contact with the player.
With these things in mind I have decided to create a game where the player will be chased by an invisible foe (maybe a monster?) that can only be heard. The gameplay will come from trying to avoid the enemy by using their ears and making their way though a level such as a cave or tomb to escape.
On to the level design next!