Exclusive Steins;Gate content, often referred to in enthusiast circles, is primarily found in the Elite Limited Edition, featuring a storyboard book and platform-specific bonus games. Community-driven "Committee of Zero" patches restore cut content, while exclusive, retailer-specific print editions exist for the Steins;Gate 0 manga. For a detailed look at the limited edition, watch this video from Spike Chunsoft .

Through the "Lost Divergence Logs," we learn that Okabe’s Reading Steiner is not a blessing but a physical scar on the universe. Every time he leaps between world lines, he leaves behind a "quantum echo"—a ghost of a memory. The Codex Exclusive reveals that six of these echoes have become self-aware, forming a secondary antagonist: .