If you enjoy puzzles you’re going to love Number Link! Get ready to spend endless hours of enjoyment along your phone or tablet with this free and fun puzzle game. Also know as Arukone, playing this exciting puzzle is very simple: connect the pairs of numbers without leaving any empty square on the board. Sounds easy but it’s really puzzling, so don’t underestimate this brain teaser. Number Link is a real challenge! Join more than two million players from all over the world. Download Number Link now and find out why everybody loves and plays this fun and addictive puzzle game. With over 800 different levels, with board sizes ranging from 5x5, 6x6,7x7 up to the mind blowing 12x12,13x13,14x14 ones, Number Link is a great game to help you sharpen logic and reasoning skills whether you’re a beginner or an experienced puzzler. Just pick some puzzles and let the time escape! HOW TO PLAY Choose a Number Link stage and start connecting pairs of numbers on the board. Be careful not to overlap the lines or you will interrupt the lines between them. The solution for each stage is achieved when all the pairs of numbers are correctly connected and all of the squares of the board have been filled. RULES The player has to pair up all the matching numbers on the grid with single continuous lines (or paths). The lines cannot branch off or cross over each other, and the numbers have to fall at the end of each line (i.e., not in the middle). It is considered that a problem is well-designed only if it has a unique solution and all the cells in the grid are filled, although some Numberlink designers do not stipulate this. HISTORY In 1897, a slightly different form of the puzzle was printed in the Brooklyn Daily Eagle, in a column by Sam Loyd. Another early, printed version of Number Link can be found in Henry Ernest Dudeney's book Puzzles and Curious Problems (1932) as Planning Tours (puzzle no. 270). This puzzle type was popularized in Japan by Nikoli as Arukone (アルコネ, Alphabet Connection) and Nanbarinku (ナンバーリンク, Number Link). The only difference between Arukone and Nanbarinku is that in Arukone the clues are letter pairs (as in Dudeney's puzzle), while in Nanbarinku the clues are number pairs. As of 2006, three books consisting entirely of Numberlink puzzles have been published by Nikoli. If you have any suggestions, please send a mail to jerrychang2014@qq.com, Thank you!