Very fun, I enjoyed playing through all the levels and it was very satisfying to see the big rain of dice hitting all at once afterwards. I think I was quite deep into the second level before realising I could upgrade or sell towers, but I guess I did learn it naturally enough through play.
This is maybe an unfair criticism, because I've felt the same way about a lot of tower defence games that were *not* made in a weekend, but I struggled to tell how strategically effective my decisions were, see strategies beyond "slap as many towers down as possible" and sense a payoff. I always like a slow tower in this sort of thing because it gives a very obvious visible synergy - "ahah, this slow tower would be useless on its own, but nested in amongst my high damage towers it's doubling their value", etc.
With the sheer number of dice it was also a bit tricky to tell if I was rolling above or below average. I think once I felt like I was absolutely rolling in cash, but the rest of the time it just felt like decent money, and at that point I wasn't sure I was really feeling different from if I'd just been handed a big pile of cash. It might be more interesting if you were handed a random assortment of towers to place and had to be strategic with what you had?
In any case, still one of the most fun games I've played in the jam and the only TD I've seen. Slick and polished, I would have believed this was a professional browser or mobile game!