Generally just a choice for the demo - in part because restricting the view distance means less data to download (thus lower cost to serve!). If you switch the

Generally just a choice for the demo - in part because restricting the view distance means less data to download (thus lower cost to serve!). If you switch the phone to portrait you will be able to see the horizon. The library itself (https://github.com/felixpalmer/procedural-gl-js https://github.com/felixpalmer/procedural-gl-js) lets you configure the angle freely.