The Caligula Effect: Overdose
Released Mar 2019
Mobius. An idyllic world that lets people forget about the pain and problems of reality. Created by a sentient vocaloid program, μ (Mu), reality and fantasy have become blurred, allowing people to relive their high school years in bliss -- but just how real is a virtual happiness?
73% positive · 614 reviews
Done
All announced content has been released
High confidence
Done
All announced content has been released
High confidence
Where to buy
Prices in USD, as listed by each store.
Buying through an affiliate store helps support the site
Evaluation
The Caligula Effect: Overdose launched on March 12, 2019 as an enhanced re-release of the original game, already packed with additional content including new routes, characters, and scenarios. All 16 DLC items — a digital soundtrack, art book, costume sets, and individual character swimsuit costumes — were released on the same day as the game itself, indicating they were bundled as launch content rather than part of any post-launch content plan. There has been no developer communication announcing future updates, expansions, or additional content. No post-launch major content updates have been identified, and no unreleased DLC exists in the store listing. The game appears to have launched as a complete, self-contained package with no ongoing content cycle.
Evidence
All 16 DLC items released on launch day (March 12, 2019), covering a soundtrack, art book, and costume packs — no post-launch DLC or unreleased items
Store description focuses on the enhanced features of Overdose as a complete re-release with no mention of future content, roadmaps, or additional updates
Content
16 of 16 released · no outstanding content
Media
Details
Developer
Publisher
NIS America, Inc.
Achievements
37
Platform
Windows
Controller
partial support
Steam Deck
Unsupported
Players
Single-player
About this game
Relapse into the virtual world
Mobius. An idyllic world that exists for the sake of letting people forget about the pain and problems of reality. In this world created by a sentient vocaloid program, μ (Mu), reality and fantasy has become blurred, allowing people to relive their high school years in bliss. Yet in this seemingly beautiful and perfect world, something is amiss.
Escape from this false paradise with your fellow students and return to reality in The Caligula Effect: Overdose!
Key Features:
An Overdose of New Features - The Caligula Effect: Overdose boasts enhanced visuals and gameplay! Explore new scenarios, endings, and the “Forbidden Musician Route” while escaping the virtual world of Mobius.
The New Faces of Kishimai High - Play as the newly added female protagonist! Plus, meet two new members of the Go-Home Club, who each have their own new Ostinato Musician to face.
Use the Imaginary Chain! - Turn-based battle meets exhilarating action in this refined JRPG battle system! Develop a flawless strategy after using the Imaginary Chain to predict what your enemies will do next!
Unite and Escape - Sometimes, it’s hard to go it alone. Befriend over 500 other students in this imaginary paradise to improve your skills in battle and ultimately return to reality.
Are these done yet?
Last evaluated Jun 26, 2026
Something about this evaluation looks wrong Report illegal or harmful content