Antimatter Galaxy

Antimatter Galaxies are the second prestige layer in the game. You start with 1 antimatter galaxy(unless you have the upgrade that lets you start with 2, or are in a particular challenge). Antimatter Galaxies reset your progress up to that point, including whatever Dimension Shift and Boosts you may have acquired. In exchange, tick upgrades become stronger.

The first galaxy you buy costs 5 ninth dimensions, and each subsequent one requires 5 more ninth dimensions. Past 100 galaxies, the cost scaling starts increasing faster.