Fun and balancing- Balancing is meh and too much waiting without much engaging content for such a short game imo. Though it doesn't give too much clicking or ridiculous lengths of active play, which is pretty good.
Here there's also a problem of most mechanics after supersymmetry not being useful until around a hundred seconds after you unlock them. Most of the currencies only provide upgrades early on, which doesn't really feel like you're unlocking anything new, since it's just the same gameplay loop- Unlock currency, wait a while, buy upgrades with that currency, wait for next unlock. The game also seems to unfortunately fall into the "search for upgrades simulator" pitfall.
In terms of progression, it's basically pretty linear- no conscious choices, no strategy. This problem is mainly caused by the whole progression being around upgrades which give massive boosts that it's never good to think twice before buying them.
Uniqueness- Basically just a general idle game with upgrades and whatnot.
Theme- Didn't fit all that well, basically just a currency that has the name "time" in it.
Sorry if I'm being a bit too critical here, I do think the game is still pretty good for what you can do in 14 days. I've done far less in 14 days.