Wiki
Lithium - Bubble Insta Expander
Atom
World 3
Effect
No Bubble Left Behind bonus now has a 15% chance to level up the lowest bubble out of ALL bubbles, not just the first 15 of each colour. Also, +1% chance to give +1 additional Lv.
Cost for this level: 25
Details
Base max level
20 (raised by the Isotope Discovery superbit, the Atomic Potential compass upgrade and the Higgs Boson event shop bonus)