Hi. I'm the founder of Moonwards, a project to create a virtual world that traces the evolution of colonies on the Moon. It is at a very early stage right now. We have the beginnings of several scenes showing advanced colonies.
Right now those scenes are hosted on SketchFab. I want to move them over to PlayCanvas over the next month or so. I have done a lot of work on learning how to model in Blender, but have done almost nothing with game engines. For now all i need to do is figure out how to put the annotations the scenes have in Sketchfab on the PlayCanvas versions. Once the models have been worked on more, the designs are more fleshed out, and a few more things have been added to the website, then it will be time to start animating everything, set up the physics, do proper materials and lighting, and add interactivity. That is several months away.
I am impressed with everything i see here. We have made it policy to do everything with open source tools and services if possible. PlayCanvas looks like a great fit. We have lots of work to do before we will be able to take proper advantage of it. For now we are exploring.