Cute but... full of awful ideas. I don't mind the doubling per rift, makes you think about what upgrades matter, and the upgrades are interesting. Temporal rift is absolute garbage though lol
Side note, keeping buildings is actually counter productive once you get the "build more than one building per building" upgrade
So I got stuck at about e40 Mythos. Turns out there are upgrades that scale with the number of Trans, so it's worth looping 1 second transcensions for the boosts