Thanks :)
I've not actually played Katamari Damacy! Though have played some similar games.
Worth mentioning, I made the "gold bag" model in the jam, and the springs/controls/everything to do with the "player" - but the forest is "broad leaf forest" from the marketplace, the troll model is from infinity blade. There is a full list of packages used in the jam submission.
I've also made a similar fluid-like pawn a couple of years ago when first encountering UE4, and custom coded similar things in C++, Actionscript and VB6 - so that part was quick to setup.
The UI (small though it is), main objective, testing, sound design and some other bits I am less familiar with is where much of the time went.
Also, arguing with myself for a day or two over what to start working on (then switching from a single gold bag to a swarm, nearly going for a "snake" like setup)