"Killer Countdown" is an intriguing fighting game currently in development, blending fighting, horror, action, and mystery genres. It features a lineup of notorious real-life serial killers, mass killers, terrorists, infamous criminals, and more, each character known for their unique abilities. The game is controversially considered "the most outrageous" due to its content, with Caio, Teixeira, and KJ portrayed as the deadliest and most unstoppable fighters and the strongest boss characters in the video game, having broken records in real life as well. If more names are to be mentioned here, the game also added serial killers like Ted Bundy, Zodiac Killer, John Wayne Gacy, Richard Chase, etc.