In Scandinavia, the Elder Futhark remained in use until some time around the eighth century (the time of the Eddas), when drastic changes in the Old Norse language occurred, and corresponding changes in the runic alphabet were made to accommodate the new sounds. However, unlike the Anglo-Saxon Futhorc, the Younger Futhark (as it is now called) reduced the number of runes from 24 to 16, and several runes came to represent multiple sounds. The forms of the runes were also changed and simplified. There are several variations of this futhark - Danish, long branch, Norwegian, dotted, etc.
This form of the runic alphabet spread from Denmark north into Sweden and Norway, and was carried into Iceland and Greenland by the Vikings. It is possible that they were also brought to North America with the Vinland expeditions, but so far no authenticated inscriptions have been found.