The official release date has been set!
The official release date for Not Sleep Hero has been set at 8 p.m. Pacific time on July 16. Let's play together! ??? : I guess they're releasing it now! ??? : Let go! ??? : Okay!

Developer posts and news about this game.

The official release date for Not Sleep Hero has been set at 8 p.m. Pacific time on July 16. Let's play together! ??? : I guess they're releasing it now! ??? : Let go! ??? : Okay!

The first part of Infinite Mode has been opened so that you can quickly enjoy the game itself when playing the demo. Bosses are not included in the infinite mode of the demo. As the game logo was updated, we changed it to make the visual elements more visible. ??? : Now we can pl

The variety of mobs has increased. Weapons and reinforcements are saved after levelling up.

The Steam Next Fest event will begin at 10 AM Pacific time on the 15th. You can also participate in " Not Sleep Hero " to play the demo for free. The contents of the demo and the main game may be different. ??? : It's finally starting! ??? : What..? ??? : I don't know..

We are participating in this upcoming Steam Next Fest . The event runs from June 15, 2026, to June 22, 2026 , and we have decided to release our demo before the festivities begin. The demo for " Not Sleep Hero " will be available until June 22nd, when Next Fest comes to a close.