Simple and fun design. The zoom was a nice effect when you die.
The start of each level felt a little strange with it being paused for a second. Some kind of animation (or timer) to show you when the game will start would make it feel nicer imo :)
I often found join in trying to get as many dots in one capture at once. It might be fun to have the score multiplied as more are captured at once or something. Makes multiple strategies :)