What kind of world
The Earth did not empty. It changed hands.
Humanity built replacements for itself, and then left. What remains is a civilisation that runs on infrastructure nobody remembers commissioning: factories that still produce, servers that still answer, doors that still open for people whose tags stopped being checked decades ago.
The people you meet believe they are human, and by every law that matters they are. Whether the ground they walk on agrees is a question the game will not answer for you.
Four ways in
A class is a job, not a rank. Each one changes what a fight is.
One line of country, five zones, levels one to sixteen. The road runs north and the levels rise with it. At the end of it something is still announcing a status change nobody asked for.
The first region
Haldor, the ash fen, the pine ridge, the ruin field, the river march.
One world
Everyone is in the same place. No instance to pick, no queue to join, no version of the world that only your friends can see.
Free movement
A stick or a keyboard, and a camera you steer. You go where you look. Combat is an area, not a target list.
No download
It is a page. Open it on a phone on a train, and the same world is there when you get home.
Yours to keep
Play as a guest. If you want your character to still be there next week, you make an account once, and nothing moves.