Battle of the dots
I'm definitely more for a solid gameplay over graphics but having just dots battling against each other leaves one hoping for more. As for the gameplay, I think the level progression is too slow: as there is little variation to the behaviour of the enemies as well and the challenge doesn't grow that much, one gets easily bored.
Ps. A more detailed comment: the enemies that follow you (or are in the mode of following you) don't understand the wrapping game field. Maybe you should make them understand what truly is the shortest route to the player.