looks similar to revolution idle, but has none of the complex synergy. once you get a new tier circle, the old one is completely useless and adds nothing to the overall income.
only new particle that does better than the starting particle is y, the rest are worthless when you unlock them. Big letdown. Maybe n will be better, haven't unlocked it yet.
endgame is just waiting for hours to get maybe one small upgrade. extremely slow particle gain once you get close to e300. At this rate it'll take months of a slow slog to cap rune levels and finish research.