The Game Census
The Caligula Effect: Overdose cover art

The Caligula Effect: Overdose

FURYU Corporation · NIS America, Inc. · 2019-03-12

SteamGOGPlayStation StoreAmazon

RPG

Modes: Single player · Perspectives: Third person

Releases: Mar 12, 2019 (Nintendo Switch), Mar 12, 2019 (PC (Microsoft Windows)), Mar 15, 2019 (PlayStation 4), May 30, 2023 (PlayStation 5)

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?

The Caligula Effect: Overdose is a 2019 RPG priced at $49.99, with an estimated 20,000 to 50,000 owners and Mostly Positive reviews (73% of 617 reviews).

1
playing now
73%
positive of 617 reviews
Mostly Positive
steam's rating (official)
20,000–50,000
owners (SteamSpy est.)
56/100
critic score (4 outlets, IGDB)
60/100
IGDB user rating (3 ratings)
11
Nexus mods (694 downloads)
4.10★
PlayStation Store rating (1,491 ratings)
platinum
deck/linux tier (ProtonDB)
Unsupported
Steam Deck (Valve)
SteamOS: Unsupported
$49.99
steam price (US)

1 players in-game as of 2026-10-14 21:00 UTC (census sample)

The Caligula Effect: Overdose is an enhanced retelling of a role-playing game set inside a virtual reality world called Mobius. Created to shelter troubled people from the pain of their real lives, Mobius traps its inhabitants in an idyllic high school existence, where they are made to relive the same three years of adolescence over and over without end. The protagonist is one of the few to awaken to the truth: that this comforting paradise is an artificial prison overseen by a god-like vocal program known as Mu. Refusing to remain, they join forces with Aria, the former keeper of Mobius, to f(Storyline via IGDB)

Health check

Quiet
  • · 1 players in-game at the last census sample.
  • · 20 reviews in the last 8 weeks (~3/week).
  • · Review velocity down 20% vs the prior 8 weeks.
  • · Top 22% of 13,902 RPG games in the census by review count.

Health tier since 2026-08-31

Estimated sales: 15k–37k copies

Review-multiple estimate from 617 total reviews — how this is computed.

Current store prices

GOG$49.99

Deal snapshots via CheapShark, refreshed daily.

All-time low: $9.99 at GOG (2024-10-25)via IsThereAnyDeal

12-month high $49.99 · on sale 12 of 75 observed days · $40.00 above the all-time low (census price snapshots)

Review momentum

PositiveNegative
404020192026Week of 2019-03-01: 40 positiveWeek of 2019-03-01: 9 negativeWeek of 2019-04-01: 11 positiveWeek of 2019-05-01: 11 positiveWeek of 2019-05-01: 3 negativeWeek of 2019-06-01: 8 positiveWeek of 2019-06-01: 2 negativeWeek of 2019-07-01: 4 positiveWeek of 2019-07-01: 2 negativeWeek of 2019-08-01: 2 positiveWeek of 2019-08-01: 2 negativeWeek of 2019-09-01: 2 positiveWeek of 2019-09-01: 3 negativeWeek of 2019-10-01: 4 positiveWeek of 2019-10-01: 1 negativeWeek of 2019-11-01: 9 positiveWeek of 2019-11-01: 1 negativeWeek of 2019-12-01: 5 positiveWeek of 2019-12-01: 1 negativeWeek of 2020-01-01: 7 positiveWeek of 2020-01-01: 1 negativeWeek of 2020-02-01: 5 positiveWeek of 2020-02-01: 1 negativeWeek of 2020-03-01: 3 positiveWeek of 2020-03-01: 1 negativeWeek of 2020-05-01: 10 positiveWeek of 2020-05-01: 1 negativeWeek of 2020-06-01: 4 positiveWeek of 2020-06-01: 3 negativeWeek of 2020-07-01: 7 positiveWeek of 2020-07-01: 8 negativeWeek of 2020-08-01: 4 positiveWeek of 2020-08-01: 3 negativeWeek of 2020-09-01: 8 positiveWeek of 2020-09-01: 8 negativeWeek of 2020-10-01: 5 positiveWeek of 2020-11-01: 7 positiveWeek of 2020-11-01: 4 negativeWeek of 2020-12-01: 5 positiveWeek of 2020-12-01: 4 negativeWeek of 2021-01-01: 4 positiveWeek of 2021-01-01: 1 negativeWeek of 2021-02-01: 3 positiveWeek of 2021-02-01: 1 negativeWeek of 2021-03-01: 2 positiveWeek of 2021-03-01: 3 negativeWeek of 2021-04-01: 7 positiveWeek of 2021-04-01: 2 negativeWeek of 2021-05-01: 4 positiveWeek of 2021-05-01: 3 negativeWeek of 2021-06-01: 7 positiveWeek of 2021-06-01: 3 negativeWeek of 2021-07-01: 4 positiveWeek of 2021-07-01: 1 negativeWeek of 2021-08-01: 3 positiveWeek of 2021-08-01: 1 negativeWeek of 2021-09-01: 1 positiveWeek of 2021-09-01: 3 negativeWeek of 2021-10-01: 7 positiveWeek of 2021-10-01: 3 negativeWeek of 2021-11-01: 2 positiveWeek of 2021-12-01: 7 positiveWeek of 2022-01-01: 2 positiveWeek of 2022-01-01: 1 negativeWeek of 2022-02-01: 5 positiveWeek of 2022-02-01: 1 negativeWeek of 2022-03-01: 6 positiveWeek of 2022-03-01: 1 negativeWeek of 2022-04-01: 4 positiveWeek of 2022-05-01: 1 positiveWeek of 2022-05-01: 2 negativeWeek of 2022-06-01: 7 positiveWeek of 2022-06-01: 2 negativeWeek of 2022-07-01: 16 positiveWeek of 2022-07-01: 2 negativeWeek of 2022-08-01: 8 positiveWeek of 2022-08-01: 1 negativeWeek of 2022-09-01: 4 positiveWeek of 2022-09-01: 4 negativeWeek of 2022-10-01: 3 positiveWeek of 2022-10-01: 2 negativeWeek of 2022-11-01: 7 positiveWeek of 2022-11-01: 4 negativeWeek of 2022-12-01: 2 positiveWeek of 2022-12-01: 2 negativeWeek of 2023-01-01: 4 positiveWeek of 2023-01-01: 1 negativeWeek of 2023-02-01: 3 positiveWeek of 2023-02-01: 2 negativeWeek of 2023-03-01: 1 positiveWeek of 2023-03-01: 3 negativeWeek of 2023-04-01: 2 negativeWeek of 2023-05-01: 1 positiveWeek of 2023-05-01: 2 negativeWeek of 2023-06-01: 1 negativeWeek of 2023-07-01: 2 positiveWeek of 2023-07-01: 1 negativeWeek of 2023-08-01: 3 positiveWeek of 2023-08-01: 1 negativeWeek of 2023-09-01: 5 positiveWeek of 2023-09-01: 1 negativeWeek of 2023-10-01: 4 positiveWeek of 2023-10-01: 3 negativeWeek of 2023-11-01: 1 positiveWeek of 2023-11-01: 1 negativeWeek of 2023-12-01: 5 positiveWeek of 2024-01-01: 2 positiveWeek of 2024-02-01: 3 positiveWeek of 2024-02-01: 2 negativeWeek of 2024-03-01: 8 positiveWeek of 2024-03-01: 1 negativeWeek of 2024-04-01: 3 positiveWeek of 2024-04-01: 3 negativeWeek of 2024-05-01: 3 positiveWeek of 2024-06-01: 1 positiveWeek of 2024-06-01: 1 negativeWeek of 2024-07-01: 3 positiveWeek of 2024-07-01: 1 negativeWeek of 2024-08-01: 1 positiveWeek of 2024-08-01: 1 negativeWeek of 2024-09-01: 1 positiveWeek of 2024-09-01: 3 negativeWeek of 2024-10-01: 2 positiveWeek of 2024-10-01: 1 negativeWeek of 2024-11-01: 2 positiveWeek of 2024-12-01: 4 positiveWeek of 2024-12-01: 1 negativeWeek of 2025-01-01: 5 positiveWeek of 2025-02-01: 2 positiveWeek of 2025-02-01: 2 negativeWeek of 2025-03-01: 3 positiveWeek of 2025-04-01: 1 positiveWeek of 2025-04-01: 3 negativeWeek of 2025-05-01: 3 positiveWeek of 2025-05-01: 3 negativeWeek of 2025-06-01: 2 positiveWeek of 2025-07-01: 3 positiveWeek of 2025-07-01: 1 negativeWeek of 2025-08-01: 2 positiveWeek of 2025-09-01: 2 positiveWeek of 2025-10-01: 2 positiveWeek of 2025-11-01: 4 positiveWeek of 2025-11-01: 1 negativeWeek of 2025-12-01: 2 positiveWeek of 2026-01-01: 3 positiveWeek of 2026-02-01: 1 positiveWeek of 2026-03-01: 2 positiveWeek of 2026-04-01: 3 positiveWeek of 2026-04-01: 1 negativeWeek of 2026-05-01: 1 positiveWeek of 2026-06-01: 2 positiveWeek of 2026-08-01: 1 positiveWeek of 2026-08-01: 1 negative
Weekly review counts (Steam review histogram). Positive above the line, negative below.

Players online

502026-09-15 07:00 — 1 players2026-09-16 15:00 — 0 players2026-09-17 22:00 — 0 players2026-09-19 06:00 — 2 players2026-09-20 13:00 — 1 players2026-09-21 21:00 — 1 players2026-09-23 05:00 — 3 players2026-09-24 12:00 — 0 players2026-09-25 20:00 — 2 players2026-09-27 03:00 — 1 players2026-09-28 11:00 — 0 players2026-09-29 18:00 — 0 players2026-10-01 02:00 — 1 players2026-10-02 09:00 — 0 players2026-10-03 17:00 — 4 players2026-10-05 01:00 — 1 players2026-10-06 08:00 — 1 players2026-10-07 16:00 — 0 players2026-10-08 23:00 — 1 players2026-10-10 07:00 — 2 players2026-10-11 14:00 — 5 players2026-10-12 22:00 — 1 players2026-10-14 06:00 — 3 players2026-10-14 21:00 — 1 players
Concurrent players, hourly average, last 30 days (census samples).

Price history

$49.99$9.992019-03-052026-10-142019-03-05 — best price $49.992019-07-08 — best price $39.992019-09-11 — best price $39.992019-11-21 — best price $39.992020-01-09 — best price $29.992020-03-18 — best price $29.992020-05-11 — best price $24.992020-07-16 — best price $22.492020-09-23 — best price $17.992020-12-21 — best price $29.992021-02-15 — best price $29.992021-04-05 — best price $29.992021-06-28 — best price $29.992021-11-22 — best price $17.492022-01-14 — best price $17.492022-04-12 — best price $17.492022-07-15 — best price $17.492022-10-31 — best price $49.992023-01-05 — best price $49.992023-05-08 — best price $14.992023-08-25 — best price $49.992023-12-02 — best price $49.992024-03-21 — best price $49.992024-07-04 — best price $49.992024-11-08 — best price $49.992025-01-11 — best price $49.992025-05-03 — best price $49.992025-08-01 — best price $49.992025-11-14 — best price $49.992025-12-22 — best price $9.992026-09-02 — best price $49.992026-09-17 — best price $49.992026-10-02 — best price $49.992026-10-14 — best price $49.99
Lowest recorded price across tracked stores, per day (census snapshots).

Completion

37
achievements tracked
90%
earned "Welcome to Mobius!"
15.2%
median achievement earned by

Global achievement rates from Steam.

Details

WindowsSingle-playerSteam AchievementsPartial Controller SupportSteam CloudFamily Sharing16 DLC

1 supported languages: English

Post-launch support: 16 DLC released, first 2019-03-12 (Steam store data)

Console footprint

PlatformPlayers trackedCompletionTrophies/achievements
PS4 (PlayStation)2,74111%37
Steam (Steam)1,2865%37
PS4 (PlayStation)61029%37
PS5 (PlayStation)11618%37
Switch (Nintendo)250%0
PS5 (PlayStation)1250%37

Players tracked by Exophase (achievement/trophy trackers) — a sample of the player base, not total sales.

Player tags

RPGJRPGAnimeViolentStory RichTurn-BasedSingleplayerGreat SoundtrackTurn-Based CombatFemale Protagonist

Census log

Computed from census-recorded observations only — dates are observation dates.

Players also track

Star Control®: OriginsImmortal: UnchainedTanziaOmensight: Definitive EditionEternity: The Last UnicornRebel Galaxy OutlawONINAKITorchlight III

Similarity via IGDB.

Official site ↗Wikipedia ↗