My favorite game to play with my 8 year old nephew is…Lego Minotaurus. Easy to learn but there are a wide variety of strategies to consider. This can be played as a very fast game or a long-drawn out game if you like by modifying the goals and rules. I really highly recommend this game.
Product description from the Manufacturer
The mighty Minotaur, a mythical creature, protects a secret temple hidden deep inside a labyrinth. Be the first to lead your heroes to the temple, avoiding the Minotaur and cleverly placing walls to block your opponents. Clear and simple rules make this game great fun for the whole family. You can pick this game up at Amazon.