What is the fine-grained topic of the following text: The theme this year was simply an image of Ouroboros (the cyclical snake eating its own tail), so this game involves running around a circular environment, gathering fruit and avoiding explosive robots on balloons (it doesn’t really make sense, but hey!). Only return the topic.
A game involving running around a circular environment, gathering fruit and avoiding explosive robots on balloons, themed after the image of Ouroboros.