Is there any similar particles to metaballs that they are not count faces?

I wanted to create a realistic running water animation which run from a source but i noted that,
the meta particles was actually increasing the number of faces of the scene.

My scene needs to be low-poly in order to get it to games or in blender game engine,
or else it will decrease my fps crucially.

So, i’m asking to learn if there is any other similar particles to meta-particles such like meta-balls, fluid simulation etc. that they are not increasing the number of the faces in my scene.
For example halo, line, path and billboard are not increasing the number of faces in my scene but, they are not realistic for water simulation, because when they collide they are not merge.


i will look at those 2 links, thanks!