What is the fine-grained topic of the following text: In the end, the Top 4 – Angelo Cavaletto with Merfolk, Mat Baharich with Maverick, Matthew Shaffer with RUG, and Frank Rye with Merfolk, split the prize pool of a revised Tundra, unlimited Taiga, unlimited Bayou and Volcanic Island. Only return the topic.
Splitting of a prize pool in a competitive gaming event