Azul is one of the many 'grown up' games that children can play quite easily and it's proved a big hit in our house.
The premise is mainly one of colour matching, but the strategy is quite deep and once you've played it a few times it's clear to see why it rates so highly on BGG. Thinking where you can play tiles to get the most points, whether to finish the game or gamble on completing a row the next turn.
My seven year old son loves it. And why should children be restricted to crappy roll-and-move games from their favourite TV franchise when there is quality games like this that both parents and children can enjoy together. He's yet to fully grasp the strategy, but he understands the rules and enjoys playing it. What more can you ask?