Words game you can play offline or online, on same device or bluetooth.
You can choose Scrabble rules or Erudit (Russian version of scrabble game) rules.

Words AI Offline is:

Two dictionaries (OSPD,SOWPODS)
Rich settings menu. You can change rules.
-Set time limit
-Set score limit.
- Play advanced rules version of this game: Erudit.
(In Erudit game you may put few words within one turn.)

4 level of difficulty , in easy level AI select most used words. In hard - it can use whole full dictionary.