Pokemon X is a game built for just about everyone.
The premise is actually very, very simple. You can have up to 6 Pokemon (out of ~450 before you finish the game) with you at a time. Each Pokemon can only learn up to 4 Moves. Each Pokemon has it's own stats, abilities, and types. You use these Pokemon to beat up other Pokemon to gain experience and Level up, which makes your Pokemon stronger. Rinse and Repeat, beating 8 strong Gym leaders so that you can challenge the Elite 4 and Champion, which have amongst the most strong Pokemon in the game.
It's a little more complicated than that, story-wise, but the basic premise should be enough to tell you, that there's a lot of strategy here.
However, it is very easy. This isn't an experience to blaze through, because you WILL blaze through it if that's all you want to do, but that's not what you should do... unless you want to.
You see, Pokemon is best experienced slowly, allow yourself to become immersed with your environment, catch tons of new Pokemon to try out or collect, learn about the people and places and what makes them so deep, and above all, appreciate all other people in the game by embracing what's different about them.
The Game series as a whole has made a huge graphical leap. previously, the games were always portrayed with 2D sprites which made them dull and relatively uninteresting. With pokemon in 3D, they feel much more alive. This helps with immersion a lot, and gives a lot of pokemon a personality that might not have been apparent before. They also upped the customization by a metric load. You can customize your clothes and hair along a fairly-sized preset that makes you look awesome. Clothes mix well together and you are free to mix and match and your leisure.
If you think this game is easy... well, actually, it's not. It is, but it's not. To beat this game is easy, but to REALLY beat this game is hard, it's hard despite being given all the tools you need to succeed. It's really challenging. Once you beat the game, you unlock this facility in the game called the Battle Mansion. If you thought the game was easy before, try to win 20 times in a row in the Battle Mansion. It seems just as easy as before at first, but as you win the opponents will start using stronger Pokemon and movesets, along with using strategies and items you may have not even considered.
If you manage to get 20 wins, congratulations! That's not a small feat! However, after you manage to do it, a SUPER version of it will unlock, and the battles here will be hard from the get-go and only get harder. This mode goes on forever, See how far you can go!
This game has loads of information to remember. This can be both a good thing and a bad thing. My best advice is to not be overwhelmed. Usually, if you see a Pokemon you are unfamiliar with, you can, after that battle, look up that pokemon in your pokedex, find the area it's located at, and catch it. By catching it, you will learn that Pokemon's type, and by looking more closely at it, the moves it knows and how they work.
The Game is kid friendly. However, Online interaction is best supervised. Kids should play with online chat turned off (It is off by default) and, when using the Wonder Trade Feature online, you should be there. This game has a profanity / Slang / offensive words filter, but it's not perfect. If the game is completely played offline, there is nothing to worry about.
The Game can be played in multiple languages besides English. If you are learning a new language, I can recommend playing this game in another language. You cannot conveniently change language during the story, you can only select it when you begin the game, so you should at least be able to read the Script of the language you're learning. For the Japanese language, you can play with just Kana, so you only need to learn the hiragana and Katakana to play and don't need to know any Kanji. You can also probably jump right on in to Spanish. There are many things that can be learned just listening to these characters speak. They all for the most part speak formally and grammatically correct.
I may not have covered everything. But theres a lot here for everyone. Hardcore gamers, Kids, Language Learners, you name it. As long as you have a 3DS or 2DS, you can play it.