Deluxe Scrabble gives lets you play against 9 skill levels of computer
opponents, or another human player. The game also allows for an Arbitrator who
can view all players’ racks as well as edit the board.

There is a timer that you can activate to increase the challenge… there are
13 settings from 10 seconds to 1 hour per turn, as well as off.

The game also has two word lookup features for finding words that your letters
can create. Both features use the Official Scrabble Dictionary, where you can
also view and edit the definitions.

Deluxe Scrabble for Windows