I like it a lot, but I obviously can't know if you will like how it differs from the previous games. One of the first changes I noticed was the partner's personality. It has usually been a timid Pokemon, but in SMD it's an adventurous and a bit mischievous Pokemon. The belly system is back, so you have to eat apples in the dungeons to keep from losing HP.
You no longer recruit Pokemon like you did in the old games. Instead you connect with Pokemon you can add them to the team when you go on an adventure. . I kinda liked visiting them where they lived in the old games, but...
And we now have Looplets, which is a held item where one can insert emeras that you find in the dungeons. The emeras grant you some powers, which depends on the emera, but the power the emeras give are only for that particular mission.
You can read about all the new and returning features here http://bulbapedia.bulbagarden.net/wiki/ ... n#Features
I wouldn’t recommend scrolling up though, as the plot is talked about which may ruin the game for you. I at least like to find out as I go along with it.