The Drag[en]gine is a fully customizable game engine and game development environment designed with modularity and extensibility in mind not requiring expensive licenses.
This video shows a few example particle systems. Excuse the „hickups" in there. For some reason the capture soft gives me troubles since some days. Maybe HD a bit full who knows. The first one you might recognize from an old video about prop fields. It's the little fountain a thirsty dragon has been drinking from. Didn't plan for the splattering effect but the basic collision behavior of particles bouncing off the surface gave this (albeit crude) effect until more collision parameters are available. Second system shows some smoke. Later on this will be done using a special Smoke Emitter object but can also be done using particles which looks not that bad. Eventually a test with a spark emitter. The sparks are emissive which shows well in darker light conditions where they illuminate nearby geometry. As a little funny part I plugged in a plant model which acts like a particle catcher resulting in interesting lighting effects. These are just a few examples of what can be done with the system.
The sparks emitting light looks awesome! Very cool stuff, and it looks like the engine can handle a lot of particles as well!