Doki-Doki Universe works far better as a personality quiz, than as an actual game. Every single quiz is a treat in itself, while every planet, in which you have to do tasks in order to advance the story, is a chore. You barely get any satisfaction from completing the tasks or the story, for that matter, while the quizzes are great fun, enlightening and seriously addicting.
Pros: Unique and interesting personality tests of which results line up surprisingly well with the ones of the more ''serious'' and professional tests, offers interesting insight to the given answers, charming, cool concept, lovely ''kiddy'' art style and sound, funny
Cons: A large amount of content is locked behind DLC (most of which was Day1), superficial logic in one of the tests' departments, inexcusable slowdowns and load times on the Vita for such a simple looking game, extremely simple gameplay, imprecise touch controls, clash of the smooth and low-framerate animations, underdeveloped characters and story