Two to four players on this device. Computer players think on their own.
Easy and medium computers only play everyday words. Hard knows the whole list and keeps a good rack.
The same seed deals the same tiles, so a seed is a game you can hand to someone else.
Which letter should it be? It scores nothing.
Pick the tiles to throw back. You draw the same number and lose your turn.
Make words crossword-style from your seven tiles. Every word goes in one row or one column and has to touch the tiles already down; the first one covers the star.
Coloured squares multiply what lands on them for the first time: 2L/3L a letter, 2W/3W the whole word. Every new word you form scores, including the short ones across. Using all seven tiles at once is worth 50 extra. Blanks can be any letter and score nothing.
Placing tiles: drag them, or tap a tile then a square. Tap a tile you've put down to take it back. With a keyboard, click a square and type; click it again to turn the arrow, Backspace takes back, Enter plays.
The game ends when the bag is empty and someone plays out, or after six scoreless turns in a row. Letters left on a rack count against you.
After each of your moves the log shows the best play you had. The referee is word-list (MIT), about 270,000 words; the easier computers draw on SCOWL's everyday tiers. Both load once from a CDN.