When I was very young I went through an aliens phase and a crystals phase at the same time. In class, we were often assigned projects in which we had to write stories, so I wrote one about an invasion of Earth by crystalloid aliens. So yes, I could imagine that aliens at one point looked like crystals. If you want to know the ending of the story, the humans are all killed during a final battle with the aliens, but their DNA is reabsorbed by bacteria at the scene, which develop into a stronger race of humans able to fight back the invaders and repel them.
Anyhow, carry on.
 "Fantasy Online"){kind=icon}
 "Symbiosis"){kind=icon}
 "Runescape"){kind=icon}
 "Cell Warfare"){kind=icon}
 "Golemizer"){kind=icon}
 "The Company of Myself"){kind=icon}
 "Dragon Age: Journeys"){kind=icon}
 "Balloon in a Wasteland"){kind=icon}
 "Frantic"){kind=icon}
 "StarShine"){kind=icon}
 "Bubble Tanks 2"){kind=icon}