Find the hidden line by analizing the numbers on the playfield. Borders includes 15 levels. Each level has some different puzzles. Some levels are quite easy, for others you need you whole brain.
Borders has been released for Mac OS X (yes, in the old days macOS was written this way) but only for PowerPC Macs. So today it is no longer available. One day, when I have the time, I surely will release this game for iOS.