Many table games exist out there to approach if you want to develop your intellect, but to me, scrabble game is by far the most exciting and amazing word game that people can play. Yes, you may as well enjoy playing chess which is also very popular among those people who want to train their intellect, but there is something special that the game of scrabble comes with: it puts your creativity at work while enriching your vocabulary.
Crossword puzzles can be in a way similar to scrabble, so can be verbarium, the game where you are presented with a word out of which you need to come up with as many other words as possible. But as mentioned above, scrabble comes with its novelty in that you have to create words by attaching them to the existing ones on the table.