The CubeSurfer Addon allows us to remesh a particle system realtime. While we can get similar effects by using a Metaball, we get now the possibility to add modifiers. At the moment the cubesurfer addon is working for Blender 2.8, not 2.81. Per November 4 we see a comment here from Poipt that there is an update. (The Cubersurfer Addon didn’t fill all the faces, and now it does).
The CubeSurfer Addon was originally written by Pyroevil, and it is now ported over to Blender 2.8. Watch the video below about how to get around the current bug and how to install the addon.
How the CubeSurfer Addon works at the moment
For those who don’t have access to the video, here some notes. Make first a particle system as you used to do. For example add an Ico-sphere to the scene and duplicate it. Subdivide the first IcoSphere and make a particle system on it. In the particle settings you select, under the render section, the second IcoSphere as render object.
Then add an IsoSurface to the scene. Select the IsoSurface in the Outliner, and go to the properties panel > Object properties. Scroll down until you see the CubeSurfer panel. Click the plus-sign, and under object you select the IcoSphere. And under Particle System the Particle system the IcoSphere has. Play the time line and you might see some geometrie popping up every now and then. That is a good sign, but you have to adjust the Voxel Size and the Particles Size Multiplier.
How to install the CubeSurfer addon?
This could be tricky (latest version): You need to end up with a folder in the blender addons folder named: cubesurfer. In the folder cubesurfer you need to see __init__.py and mciso.pyd. To get that, you need to extract the .zip file, and in there is another .zip file that need to be extracted. So then make a folder in your blender addons location, make a folder and name in cubesurfer, place the two files in there. Restart Blender, go to the preferences and enable Cubesufer.
Update: here is the latest version that fills all the faces: https://gofile.io/?c=sEWqb3
You can download the older version that shows missing faces: CubeSurfer addon on Github. Then in Blender you go to Edit > Preferences > Addons and press the Install button. Navigate to the .zip file and press Install. In case you get the error when activating the addon, close Blender, change the folder name as describe here above. Then restart Blender and activate the addon again. In case there is still a problem it could be that you need a C++ distributable. For more information about it check: http://pyroevil.com/cubesurfer-addon-download/