Overall, the game is fun. I like sequence games; the idea is straightforward and works well.
I do miss an overarching narrative or "motive" to continue playing rather than a simple increase in difficulty. Still, it's more of a personal liking rather than an issue within the game.
The art style is functional, but has no personality right now: as it is quite simple visually, you can probably enhance it by getting help from someone to push the graphic a little further and find a more captivating style.
That said, the game is enjoyable and recommended.