Scoring is determined by the number of letter tiles stacked in a new word. Unlike Scrabble, in Upwords letters can be stacked on top of existing words to create new words.

Upwords is a letter tile word game similar to Scrabble, with players building words using letter tiles on a gridded game board. It is currently available as a board game and a digital gaming app. It has been marketed under its own name and also as Scrabble Upwords in the United States and Canada, and Topwords, Crucimaster, Betutorony, Palabras Arriba and Stapelwoord in other countries. It was originally manufactured and marketed by the Milton Bradley Company, then a division of Hasbro.