While the idea is simple, the game is very upbeat and entertaining. However, I'm questioning how the bear can handle all that food. And doesn't it get tired of jumping up and down and running at full speed? No? Alright then. Just asking.
Also, I have some handy advice for players. Memorize when the fireflies come so you can be ready. The fireflies are extremely important, but you might not realize it until it's too late and they're covering the whole screen. Anyways, memorize at what points the fireflies come (for example, the first one appears at 45 points, the next at 66, and so on) so you can be ready to stab those shadows like a . . . er . . . shadow stabber, for lack of better words.
The bottom line (literally) is that this game is pretty good, and I like it.