I made this with geometry nodes and I was wondering if there is a way to remove some of the sphere instances which are intersecting with each other? Tried to use delete geometry but it doesn't seem to be working.
One reasonable strategy is to use Merge by Distance node. Unfortunately this node moves (averages) positions (and all other attributes) of points, so you need to move them back - but after moving them back they may still overlap! Therefore you need to repeat the process a few times:
With the Merge Still group being:
And for completeness, Suzanne was hexagonized with: