The best alternatives to PairPlay Audio Adventures are Xbox One X, CozyRoom, and High Fidelity. If these 3 options don't work for you, we've listed a few more alternatives below.
Soundescape is a free web application for ambient background sounds. If you struggle to concentrate while working from home, this tool is for you! Audio is rendered in 3D, and you'll never hear the exact same combination of audio twice, as everything is generated randomly.
focus, meditate, sleep… escape into your own unique virtual 3d soundscape, so you can focus on what's really important. get away from your distracting surroundings and relax, focus or sleep in your own odio cocoon.