Loot chests and footsteps are audio effects in Fortnite that can be heard thanks to spacial sound. To pinpoint their exact location we need stereo headphones or good speakers. Not all of us have either, so the developers added an option visualize these effects with icons, letting us see where players are coming from, and where loot chests can be found.
To enable this, head into Settings. Under Audio, there’s an option to Visualize Sound Effects. That’s it! Your next vitory just got a little easier 