Harry Potter and the Gamer System

Did I hit my head too hard? What are these strange, blue floating boxes.
The life of Harry Potter just changed for the better.

(Harry will be grey and open to all magic but not evil. He will be extremely powerful, not on the same level as Dumbledore and Voldemort yet, but way more powerful than any Hogwarts's student. He doesn't particularly want friends but considers them more as allies. Life before Hogwarts will include lots of grinding. No pairings so far)