This is such a great game, engaging, well-made, and challenging if you want it to. The aim is to guide balls towards a goal with the help of slides, seesaws, fans, flippers, portals, accelerator strips etc., and the levels are all very doable if you don't care for leaderboard placement (you can get by with a "pass", heh). It's actually fun to try and really beat the levels, though. I originally downloaded it just to see what it was about and now I'm busy getting gold on all levels and 100% in each zone.The game leads you through the various themed sections and zones with a loose storyline and a really entertaining narrator-companion; since the music is pretty good too and the acoustic signals can be helpful in timing a gold run it's one of the few games where I'm switching the sound on.The zones/themes are obviously made with love, imaginative and distinct, I've thought "this is my favourite set of levels!!" several times before realizing that, okay, perhaps they really are consistently good (top three are currently ***mild spoilers*** the retro gaming levels, the storybook-themed ones and the ones with portals in a haunted house; honourable mention to the one with the pirate cannon & targets ***end mild spoilers***). Obviously there are a few stinkers, but in 6 zones so far with ~20 levels each I've only had one level that I really disliked.You can also buy ball sets with the coins you earn in levels and equip them for playing, either as a set or individually (currently I'm playing with the ladybird ball from the animal set, whose happy, vacant expression makes it much more bearable if you lose total control of a level in the zero gravity section and the balls are just floating around aimlessly, sometimes towards you).There are also two multiplayer options (PvP and co-op) that are fun if you can find someone to play with or host your own game via a code, but at the moment there's a bit of waiting involved in public play, which is a bit of a shame since it seems to be the only way to really get enough tokens for the current special event dino set. I don't think I'll make it, but all that playing has netted me enough coins to just buy the set instead, so there's that. Anyway, just a big, fat recommendation overall.

Doof doof