Epic Seven x Chaos Zero Nightmare Collaboration Content Update 2026-09-18

■ Runs until October 29—featuring a Special Side Story, new Heroes, and celebration events.

■ Update featuring Collaboration Heroes Haru and Renoa—Renoa is available to everyone through a special Check-In Event.

■ Official update of "Dimensional Exploration," Epic Seven's first roguelike content.

[2026-0918] On Friday the 18th, Smilegate announced that its mobile turn-based strategic RPG "Epic Seven," developed by Super Creative, is joining forces with the company's popular IP, "Chaos Zero Nightmare" (hereafter CZN), for a special collaboration.

CZN is a dark fantasy roguelike RPG serviced by Smilegate. It has gained massive popularity for its shocking presentation dealing with characters' mental breakdowns and trauma, along with its unique card-based roguelike combat system. During this collaboration, which runs from September 17 to October 29, a Special Side Story will be available, and key Combatants from CZN will be introduced as Epic Seven Heroes. Additionally, various celebration events have been prepared.

The Limited Side Story, "Journey of the Stars: Homeward Bound," depicts the adventure of Renoa, Haru, and Mei Lin from the CZN universe as they suddenly arrive in Epic Seven's world of Orbis and attempt to return to their original world with the help of Vivian, the leader of the megacity Witchaven.

In the first week, Haru and Renoa will be released as Epic Seven Heroes. The limited Hero Haru is a 5★ Ice elemental Warrior who can increase survivability by granting a barrier and "Indomitable" to allies, while unleashing a powerful attack that penetrates the Defense of a single target. Renoa is a 5★ Dark elemental Ranger Hero. Her standout feature is the ability to grant herself the unique effect "Dirge Bullet," increasing her Speed and Critical Hit Damage, and dealing massive damage proportional to the number of Dirge Bullets granted. Renoa can be obtained by anyone through a special Check-In Event.

Events to celebrate the collaboration will also be held. In particular, the special Check-In Event will offer the collaboration Hero Renoa and various growth materials as rewards. The "Witchaven Daily Epione Center," modeled after CZN's "Epione Center" system, will also be introduced. In this event, individual stories of the collaboration Heroes will unfold, and various rewards, including Exclusive Equipment, will be provided.

Meanwhile, "Dimensional Exploration," Epic Seven's first roguelike content, has also been updated. This mode allows players to utilize up to 7 Heroes to explore the map and defeat bosses across 3 floors. It offers a highly dynamic experience where every run changes based on the player's choices, such as the paths taken at crossroads, Relic usage, and Hero compositions. The first season will be set against the backdrop of the CZN collaboration, with future seasons planned to feature a variety of themes.

For more information on Epic Seven, visit the official community and the official YouTube channel.  <End>