Streets Of Rage 4 - Mr. X Nightmare is an action-packed DLC that takes place after the events of Streets of Rage 4. The game introduces a new storyline where the heroes, Axel, Blaze, and their mates, train to prepare themselves for future threats. The training is led by Dr. Zan, who created an AI program from the remnants of Mister X’s brain that simulates every kind of danger they could face.

This new DLC offers exciting features such as three new playable characters, a new survival mode with weekly challenges, character customization, new moves, weapons, and enemies. The addition of new content adds more depth to the game and makes it more engaging for players who love action-packed games. Overall, Streets Of Rage 4 - Mr. X Nightmare is a must-have for players who love the classic beat 'em up genre and want to experience more action in the game.