Super Scrabble standard "Scrabble" in "Super Scrabble" are summarized by the latter's tagline, "More spaces, more tiles, more points—add to your fun!" The board is larger; (21×21 or 441 squares vs. 15×15 or 225 squares); there are more premium squares (going up to quadruple letter and word score spaces); there are 200 tiles, twice as many as a normal "Scrabble" set. The middle 15×15 squares are identical to a "Scrabble" board, so standard "Scrabble" may be played on a "Super Scrabble" board. All the high-scoring quadruple premiums lie near the outside of the board, with the quadruple word squares at the four
Scrabble variants or triplets of numbers that sum up to less than, or exactly 15, respectively. The placement of the pairs or triplets is similar to Scrabble. Triolet means "triplet" in French. Yushino uses number sequences where every number is the last digit of the sum of the previous two. For two number sequences it requires that the numbers are adjacent. Mixmath, a game developed by Wrebbit, also involves placing correct mathematical equations on a board with bonus squares similar to a scrabble board. Scrabble Upwords (originally just named UpWords) is played with 100 letter tiles on a special 10×10 board with