If you enjoy brainteaser mini games, this game is a fun way to pass the time. The game starts immediately upon opening the app without any information about what the objective is. It would be nice to have an explanation of how the hint option works, also.
The ads are inserted in the middle of each round. It would be less intrusive if the ads were timed to run in between rounds, or possibly between every 2 or 3 rounds, since some rounds may be solved quickly. Currently, it seems the ads are timed at intervals no matter what stage you are in. Since the player needs to watch an ad to receive a hint, that is too many ads.
Although I don't need fancy graphics, some players may prefer a more visually interesting game. This could be achieved by adding textures, patterns, symbols, etc . . . to the shapes.
