The other night, I made around 14 million units in a matter of four hours in No Man's Sky (Gek traders hate her! Click here to find out why!) It was largely thanks to finding a huge number of items called 'Vortex Cubes' on a rare resource planet -- though it didn't really look like one. This odd proliferation of a supposedly super-rare item led me to question: what is the deal with these things?