Simcity 5 on the new Macbook 12" 2016 Model
Intel Core i5 is a significantly more powerful processor than Intel Core m3. I can't say for sure that it strictly won't work, but it will likely not be very smooth performance at all, unless perhaps you turn all the settings down to their minimum. I've heard even on MacBook Pro's without dedicated graphics (just intel HD) Simcity 5 performance is poor (lots of stuttering), and to the best of my knowledge the MacBook's graphics are not as strong as MacBook Pro's.

All that to say, I would not expect Simcity 5 to work very well on a Macbook at all.