Here is a video guide for the Lovikov Balls. While they do appear on the map after speaking to Lovikov, some of their locations are pretty tricky. Since the balls aren't numbered, I put them in the order from my current 100% route (aside from balls eight and nine being swapped). As a result, the order here probably looks a little weird, but this guide can roughly be divided into three sections: Main city (0:00), north city (12:57), and south city (19:39).
This guide is only for the Wii version as the PS3 overworld is different.
As a side note, this particular collectible video is in better quality compared to the others due to better video capture equipment. I also learned (embarrassingly after finishing the T-shirt video) that you can exit from the map just by pressing the Plus button.
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