Rebirth 5 is the most consequential rebirth tier to date. It unlocks the Deep Trench Abyss expansion zone and grants a 3.75x global earnings multiplier on top of the standard +30% luck bonus.
Until this patch, every rebirth wiped the player's active cash balance. Rebirth 5 leaves Extinct-tier catches in place, smoothing the rebuild loop for players chasing the Extinct Primal Rod.
Aura fusion costs have been retuned so that mid-game players can reliably reach Mythical Tide without waiting for lucky RNG. The combination of cheaper fusions and the Extinct Leviathan aura unlocks the long-term passive-income ceiling for the rest of the year.