If you count only unique content the game is very short but you will be playing the same thing almost 30 times to get every ending so expect a disproportionate amount of playtime compared to substance.
While the art is very good and Ame is an interesting character the requirements for each ending are incredibly strict and very few of the requirements are intuitive. You will be using a guide and even then if you miss a single step you are very likely to screw up your ending.
Having the final message of a game structured like this be "Stop using the internet" is pretty laughable because I doubt most people would know how to unlock that ending if they hadn't looked it up.
While the art is very good and Ame is an interesting character the requirements for each ending are incredibly strict and very few of the requirements are intuitive. You will be using a guide and even then if you miss a single step you are very likely to screw up your ending.
Having the final message of a game structured like this be "Stop using the internet" is pretty laughable because I doubt most people would know how to unlock that ending if they hadn't looked it up.