From the Store description:
This adorable game, set in the middle of a picturesque garden, has you helping Shiny, the cute little firefly, to find his babies. You’ll have to fly, run, hide and defend yourself against a legion of enemies. Stubborn mosquitoes, hungry toads, mischievous plants, sneaky wasps, endlessly long centipedes and lots of other little, dangerous garden dwellers are going to get in your way and make your life difficult.
Your reflexes will be tested, as well as your wit and intellect as you navigate through this beautiful, colorful world helping Shiny in his search. All kinds of different animations let you know how Shiny’s feeling. So you’ll always know if he’s feeling happy, concerned, tired or angry. That will help you solve the trickiest situations in the game. Use your ability to shine skillfully: the babies can only follow Shiny when he is lit up, but that also makes him visible to his enemies…
Here's Shiny The Firefly in action on my Lumia 950:
You can grab this for free here (until about midnight Wednesday, 21st March, UK time, after which it returns to £2 or so). It's a cracking arcade puzzler to work your way through on bus journeys and the like. Or maybe just curled up on the sofa. The Store entry has versions for Windows Phone 8.1 and also Windows 10/UWP, so everyone can join in the twilight puzzling fun.