@ryvanc very good question. because i was never sure how many voxels are necessary and while film people like to invest many resources and gigabytes of data i’m as a game guy think like “can’t we get away with 100.000 voxels?!” 
i’m always very very careful. the tutorial showed me that well … a lot of voxels are necessary to get nice detail. The voxel size is 0.016 everywhere: in the smoke object, the “rasterize volume” etc.
@kimber yes, flipbook + motionvectors would be the way to go (if you want to have slowmo in the game, if not, no motion vectors necessary i’d say) but for me i’ll continue learnering and hopefully can translate my knowledge into sketch22 which i never finished