Progression philosophy
World unlocks gate egg quality, not immediate power. Players who rebirth fifty times in World 1 often outperform players who rush World 4 with weak multipliers. Unlock new worlds when egg ROI exceeds rebirth ROI.
Milestone worlds
Volcano (350K) and Candy (7.5M) are early temptations — skip until rebirth multipliers exceed 500%. Library at World 15 marks mid-endgame. Beach World at 36 is the current cap — see Beach World details.