Chaos!

Can you answer my question? What is that tent above the tree in the right?

Chaos maple story is good and it seem to be sort of end of the game because nexon wont be able o relese new content that not match to the story (Except to masteria i think)

No one can answer that question, but that is the image I based this off. It appears to be a refugee tent in place of Chief Stan's house. And as long as the kept the areas isolated, it's entirely possible to keep expanding on the past without interfering with the Chaos world. New unrelated areas could be released, or they could expand on existing areas, they'd just need to do it twice (past and future)

Did you steal Craig's story from an episode of Heroes?

No, I've never watched Heroes. It's a somewhat common plot device. Random narcissist pretends to be hot stuff but is only in it for himself. Either turns out to be a coward or a traitor; whatever means are necessary to stay alive.