Kono Sekai ga Game dato Ore dake ga Shitte Iru

Kono Sekai ga Game dato Ore dake ga Shitte Iru, often shortened to Sekaige, began as a web novel series written by Usber. It emerged during the mid-2010s boom of Japanese light novels and web fiction centered on the 'isekai' and virtual reality tropes, specifically parodying the mechanics of classic role-playing games. The story follows a protagonist who is the only person aware that their world is actually a bug-ridden, broken video game, using this meta-knowledge to navigate bizarre and often frustrating gameplay glitches.

The transition of the series into print volumes involved the addition of illustrations that lean into the chaotic, comedic tone of the narrative. As a title, it is recognized for its subversion of the typical power-fantasy tropes common in the genre at the time. By highlighting the absurdities of game design—such as clipping through walls or exploiting broken logic—the series received attention for its satirical approach to familiar gaming archetypes and its lighthearted engagement with 'broken' game culture.