What is the fine-grained topic of the following text: Impulse Gamers writes: "It's amazing that EA Sport's soccer series, FIFA has been going since 1993 and even though the rivalry between Namco Bandai's Pro Evolution Soccer has gotten more intense, this rivalry has ensured that both games offer the game world something the best there is to offer. Only return the topic.
The ongoing rivalry between EA Sport's FIFA series and Namco Bandai's Pro Evolution Soccer.