It's very relaxing fun and... Addictive. I don't know why the naysayers don't see that it's very similar to 2012, all those games, and they aren't described as immature. Rude customers out there. Good work, Mr Developer! And Thank you!
Childish IMO, prefect for a child to use to learn to sort shapes and use logic;a waste of space for an adult. :(
Place, group, and erase the numbers. Enjoy a innovative number puzzle game!