Lines is a puzzle game developed by Swedish developers Pixby.
In Lines you connect dots by drawing lines between them. You can never draw the same line twice, and each new line must start where the last one ended.
The gameplay is simple yet intuitive. You can complete any level without lifting your finger from the screen once.
Lines currently consists of 5 worlds, with 15 handcrafted level in each one.
Lines is available for free on iPhone and iPad.
Lines is actually built using Apples own game engine, SpriteKit. It is also built in Apples new programming language, Swift.