@zoom_0, to give you a simple answer to your questions about if the above particle effects are possible - yes, you can make all of those in Babylon.js. The long answer to the question is that our particle systems are open enough to create almost anything you want, but it will be up to you to create the effects and code to drive and/or mix the particle systems with meshes. We have a few out of the box effects just to show as examples of creating layered FX, but for the most part the particle systems need to be designed in color, texture, timing, and motion to achieve the effect you want.
The bigger challenge you mentioned above will be the networking system to create a synchronous or asynchronous experience. Babylon is the rendering engine, but the multiplayer aspect would need to be some other form of middleware, as you would likely need for other engines. But you can certainly host this entire experience on your own server, or you can contribute it to a library that supports html5 games.
Some links to help you see how to set up the experience would be as follows:
- Introduction To Creating Games | Babylon.js Documentation (babylonjs.com)
- Playground to Production - Fruit Fallin’ | Babylon.js Documentation (babylonjs.com)
- This is a thread discussing layered particle FX Simple Particles Special Effect - #4 by PatrickRyan
- This is the direct link to the PG example for the attack FX. This example uses a combination of solid particle systems, CPU particle systems, animation, meshes, etc. It’s a complex example using some simple assets just to give an idea of how to approach some more complex FX
I hope this helps answer some of your questions, but please let me know if you have more.