Don't Tap The White Tiles
Piano Tiles: Don't Tap the White Tiles was an extremely addictive and popular game for both Android and iOS. In fact, it still is, although most people play the 2nd version of the game.
However, if you're looking for a completely free game that's fun and addicting, the original "Don't Tap the White Tiles" is worth considering. It does have a few pretty small ads, but that's all.
Basically, it's fun, free, and won't frustrate you with tons of ads.
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