Eyeshield 21: DevilBats DevilDays is a Game Boy Advance video game released in 2006 by Nintendo. The series is considered Japan's take on American football, though in this game you don't actually play any football. Rather, this is an adventure game where you go through walls of interactive text. The game is based on the anime of the same name (Eyeshield 21). File:Game Boy Advance Purple Model.pngThis Game Boy Advance-related article is a stub. You can help the Nintendo Wiki by expanding it.