Common variants of Scrabble include, but are not limited to:
All 100 tiles are laid face down. Players take turns flipping over a single tile, leaving it exposed to all players. Players can form words by:
- Removing three or more tiles from the face-up pile to form a word
- "Steal a word" from an opponent by combining the your or the opponent's word(s) with at least one letter from the table to form a longer word. For example, if your opponent has TAILINGS, you can use an O from the pool and steal the opponent's word to make INTAGLIOS, LIGATIONS, or ISOLATING.
Rules identical to those of Scrabble, but players can arrange the letters of a word in any order, provided they anagram to a valid word.
Popular on the Internet Scrabble Club. An official draws seven tiles to start the game. All players have a fixed time limit to find the highest-scoring play (not necessarily the best play), and submit the play. The official reveals the highest scoring play, and then draws replacement tiles. The game continues until there are no more consonants or no more vowels remaining. The player with the most points wins the game.
Same rules as Scrabble, but a player (before his turn) may "recycle" blank tiles by replacing the blank tile with the letter it represents. For example, if CHIMERs is played (with a blank S), a player may replace the blank with a real S. Note that he cannot replace it with an A or E to make CHIMERA or CHIMERE.
One-player Scrabble. To attain a maximal score, one can set up huge scoring plays (e.g. triple-triple-triples).
Played on a 21x21 board with 200 tiles and a slightly different tile distribution (e.g. 10 S's as opposed to 4 in the original). There are quadruple letter and word squares near the outer edge of the board.
This variant is played with two teams of two players, with each player possessing his or her own rack. The team going first makes one play using tiles from only one rack, and for all subsequent moves, one player makes a play, immediately followed by a play from the player's teammate. Setup plays are common. This variant is popular at the National Scrabble Championship.