I wasn't expecting much when I clicked but this is actually really nice and relaxing. Very well implemented too, the way pieces soft lock into place is not totally intuitive but once you figure it out it works very well.
As others have mentioned, the option to hard lock a piece would be nice and a challenge mode without the silhouette would add some difficulty but there a lot of other cool things you could do with this concept; e.g. each level could have a second "hidden" shape that you can find by positioning things just right.
Separating the levels into different "packs" that have to be unlocked would also give the player a greater sense of achievement; e.g. complete 90% of the dinosaur pack to unlock the farm animal pack, complete 90% of that to unlock the fairy tail pack and so on
This is a great game, so simple and logical but so fun. The last two circles in level twelve were a bit annoying (I have no sense of rhythm so they were basically random chance) but other than that I loved every second of it.
Pro Tip: Using a weapon makes the character hop slightly, this can be used multiple times in the air to save youself from pits, dodge obsticles or extend rat chains.
Great game, easily the best runner I have ever played. It doesn't do anything new but everything it does do it does well. Easy controls, distinct enemy silhouettes, progresses at just the right pace so you can't finish it too fast but you never have to grind. I love the art style and even the music is good, it's rare that I will play a game without muting it (I did have to mute the sound effects though). 5/5
Wait, why does Kong have to approve the update? Does this mean that all the games on Kong had to be reviewed and approved at some point, becuase there are a lot of unfinished/unplayable/rip-off games out there.