Putting forth the idea that by treating blue spheres as objects to be collected, rather than as sentient beings to be cherished with their own personalities despite the fact that the player themself is one, the game challenges us to consider that we are diminishing ourselves and each other and dooming ourselves to loneliness. It is a scathing critique of the solipsistic mindset that hegemonic capitalist ideology forces onto us all in this catch as catch can world, I assume. I have never played it.