I recently tried the game Star Numbers and found out this is actually a math game that I would never play in my life. I'm not exactly a math fan and playing a game involving math would not be something I dream of doing.
Gameplay wise this game is simple. You just solve the math problems that show up, and earn gems. What you can do with these gems is beyond me, I didn't find any gem store or any way to spend them, they just accumulate while you play. The games layout is messy and overlaps each other many times while trying to input the correct numbers, which makes things difficult at times to put the right answer. There's not much else to the game after that. Just repeat the same thing over and over with the maths problems progressively getting more difficult as you complete the levels. According to the store page, 15 minutes a day of this will help your brain, so perhaps this is good for parents to force their kids to play. Other than that, I'm not quite sure who this is for. Unless you are a die hard math lover. Then this could be for you.
Visually there isn't much to say. The background has a night sky with stars glittering, and the layout overlapping into the stars doesn't give off a peaceful feeling at all. The graphics are minimal at best, this is mainly just to practice some math skills, nothing more.
Overall I'd say that this is not the game for me, I wouldn't even really call this a game. This is just a math program to help your kids practice math daily. Perfect for parents to give to their kids, and that's about it. Or maybe if you need to refresh your math skills for whatever reason.