What level unlocks co-op in NTE? How many players can play together?

This 'what level unlocks co-op' FAQ is more useful when it explains **whether multiplayer opens through progression and whether co-op is a layered supplement rather than a full replacement for the solo structure** instead of preserving one fixed condition list. For current players, the practical point is that if co-op is still locked, the blocker may be progression rather than raw level, and if it is unlocked, that still does not mean every activity automatically becomes shared multiplayer content.

A safer way to read it is:

1. Treat co-op as a **feature layer that opens through story or system progress**, not just a simple level gate

2. Multiplayer support does not imply that every quest, story segment, or system is naturally shared; solo and co-op boundaries still matter

3. Instead of memorizing one list of activities, first verify whether the specific mode you care about is actually multiplayer-enabled in the current version

So this page now focuses on co-op unlock judgment and cooperation-boundary understanding instead of preserving an early checklist as a fixed answer.