The Caligula Effect: Overdose is now available DRM-free. Stigma Bundle DLC is available for free, and other DLC are available 25% off until March 19th, 6 PM UTC.
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.
Source:: GOG – Good Old Games