Piano Tiles 2 (Don't Tap the White Tile)
Piano Tiles has continued to be one of the most popular and addicting casual games around. What makes it great is how easy it is at first, but gets increasingly more difficult. Not only that, but it's so simple that even the youngest of children can play and enjoy it too. There are songs they know, ones they don't, and it's tons of fun.
Piano Tiles 2 is better than the first one (Don't Touch the White Tile) and has improved sound, not to mention it's just as easy or hard. It never gets old and is extremely addictive. You basically play the Piano by only hitting the black tiles as they fall from the screen similar to Tetris, only faster. It's all about being fast, accurate, and having the perfect timing to make the song sound right. Good luck.
This list could go on and on when it comes to casual games. Some are new, some are old, but a ton are worth trying. Personally, my new favorite game is Traffix, where you control traffic. Honorable mentions go out to Badlands, Raymen's Adventure, Vector (or 2), Leo's Fortune, Limbo, Minecraft, Osmos, Tsum Tsum, Thumb Drift and many many more.
Don't forget Super Mario Run, Words With Friends 2, and Dumb Ways to Die 2. The 10 above are all extremely fun, award-winning, or something you've probably never heard of. Download a few today and stay tuned as we'll constantly update this list.