Multi-niche site (Game hack site)

Hey,

I really need opinion from you guys on this question.

I have .com domain( brandable name), with 4 articles(about 1k words), but I don't write on it 3months already and it's nothing related to game hacks.

Because I don't use it anymore, is it better for me to just change description,theme and start writing game hack articles on it OR to register a brand new domain ?

If the domain name doesn't look odd for a game hack website (not sure what you meant with "brandable name"), you may keep it, especially if it's aged a bit. Otherwise, it might look more natural if you started with a more relevant URL.

You can start. No problem. But how is the backlinking profile ? Mostly game hacks / wares niches are very easy to rank specially if you are using gsa ser.