Skip to content
1
Callisto-X cover
Finished v1.21

Callisto-X

Play Online
RATING 3.9 /5 14 votes
YOUR RATING
POPULARITY #9,502
Ren'Py 5,280 3.26 GB Play Online
Download
Developer ProfessorX-10
Engine Ren'Py
Version 1.21 (Finished)
Released: Aug 28, 2025 Updated: Aug 29, 2025
Censorship Uncensored

About Callisto-X

Callisto-X is an unofficial fan created major expansion and enhancement of Xavster_Gaming’s original Callisto.

Callisto-X offers an altered, more interactive, adult Sci-Fi Adventure story/game with surprises, mini-games and a new ending among the several existing ones, all of which are determined by your personal choices and fighting skills. You play the role of a former military officer, trying to make a living as a free-lance interstellar trader and scavenger in the vastness of space aided by group of exotic & talented women crewmembers–not all of whom like you or trust you. But then fate unexpectedly casts you into the role of defending yourself and innocent millions against an onslaught of an overwhelming hoard of ravenous, life destroying aliens led by an evil, powerful queen.

Will you save the Galaxy? Or will you DIE in the attempt?
Will you retire a happy Hero? . . . or be just another dead body floating in space?​

v1.21 3.26 GB Aug 29, 2025

Confused about how the downloading works? Here is a handy guide

  • Extract to desired location.
  • Click on "Callisto-X.exe" to start playing.
1.21 Aug 29, 2025

— Final Upgraded version
— Revised Main Menu.
— New Intro scene skip function for repeat players.
— MC back story scenes added
— Callisto character added.
— Optional ending modified
— Integral Walk through, text and UI modifications in Preferences Menu
— typo corrections and bug fixes.

Minimum

OS: Windows 7+ / macOS 10.10+ / Linux

CPU: Dual Core 1.5 GHz

RAM: 2 GB

GPU: Integrated Graphics

Storage: 3.26 GB

Recommended

OS: Windows 10+ / macOS 12+ / Linux

CPU: Dual Core 2.0 GHz

RAM: 4 GB

GPU: Any dedicated GPU

Storage: 3.26 GB

Aa

1 Comment

  1. NO
    noname

    race cant be won, so game never starts

    0