A wise man once said that you should apply a small vertex jitter to voxel grids.

I won't be doing that in my game, but it's surprising how well it works.

You'd think that it would be irritating or distracting for a discrete grid to be slightly uneven while you're focusing on a puzzle, but it's not at all and might even have the opposite effect.

I'm not entirely sure why but I have a few theories:

1) The jitter scale gives you another way to judge depth, which can be hard sometimes with blocky voxels.

2) It disrupts some subtle optical illusion which makes parallel lines confusing to look at.

3) It makes it harder to miscount grid lines because they now look slightly different from one another.