How do you rebirth?
Complete the Sci-Fi base, open Rebirth (HUD icon or plot panel), confirm the wipe back to Wood. You get +20% income and +5% max health per pop, with caps.
Rebirth
Locked until Sci-Fi is finished. Panel text: +20% income (max +200%) and +5% health (max +40%).
Updated

Two separate videos open the same Rebirth window. CHALLS at FwYAeJXiwVc@05:44. Volc at JstlU1JvSJw@01:24. The body text is:
On later HUDs (Berlian, 1.1M Points) a circular Rebirth icon sits in the left stack next to Store and Invite (7-0ZibMEFAU). On early plots you still open the same panel. It is not the SETTINGS code box. 20k will not prestige you.

Skip any step that is already done.
Income cap +200% is ten rebirths at +20% each. Health cap +40% is eight rebirths at +5% each. Extra rebirths after those caps still reset you to Wood, so stop when the panel stops adding stats.
A 10-minute UPD1 window is a sugar rush. A finished Sci-Fi rebirth is the compounding one. Do not prestige the first time you see the menu on a Wood tutorial prompt. Volc’s clip opens it at 930 Points with the lock still on.
The panel does not say whether both partners share one rebirth count. Assume each Roblox account reads its own counter until a clip shows otherwise. Both people should be standing on the plot and ready to rebuy Wood pads after the wipe.
You are not on Sci-Fi yet, or the last Sci-Fi pads are unpaid. Greek at 69% win rate is an early stamp, not the gate. Cyberpunk at 3.7% sits after Sci-Fi on rarity. Trust the sentence on your panel over a YouTube title.
FAQ
Complete the Sci-Fi base, open Rebirth (HUD icon or plot panel), confirm the wipe back to Wood. You get +20% income and +5% max health per pop, with caps.
Auto-captions sometimes say 28%. The on-screen panel in two videos prints +20% income and +5% max health. Use the panel.