I can answer only 1 of those since I'm keeping a rule that only 1 thing is asked per post: like "Is it from the games?" instead of "Is it games, books, or both?".
It is from the games. Ask me another question, and I'll answer your book part.
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Colossal, but not a foe
My size is immensely vast
Similar to something the Humans know...
But dwarfing it aghast.
Beyond the Human comprehension
My skin is far from lushous
Their arrival raised my attention
They coldly destroyed my precious
I devour it now
The shards I shall conceal
It's theft I won't allow
It was destructive, but so ethereal
Score:
1 - Self Destruct