The gameplay is straightforward, and it becomes a fun challenge to one up yourself each time you set a new personal record.
It requires a steady hand and fast reflexes to get those high scores, and there's a genuine sense of self satisfaction when you do.
Gameplay, at its core, I believe should be rated as such, with all other considerations being separate, or in some cases unnecessary to the presentation of the final end product. As such, my rating is five stars, and that's why.