Rebirth is confirmed, exact timing is not
The official Roblox description confirms rebirth and research upgrades, but the current evidence does not verify the rebirth threshold, research-point reward, upgrade tree, costs, or effects.
For nuke your city rebirth guide, treat rebirth as a long-term reset path, not a fixed calculator answer yet. Keep upgrading machines and launch progress until the game itself shows you the reset condition or until verified screenshots confirm the exact threshold.
Research advice should stay conservative until the full tree is captured. The safe approach is to record each research option, cost, and effect in game, then update the planner. Until then, this page points you to role-first priorities instead of pretending there is an exact best research order.