Ren'Py Completed Callisto-X [v1.21] [ProfessorX-10]

[professorx10]

Overview:
Callisto-X is an expanded, deluxe version of Xavster_Gaming’s Callisto.
You play the role of a former military officer, now trying to make a living by trading and scavenging in the vastness of space. You, your ship the Callisto and your rag-tag crew will experience new adventures and relationships along its travels.

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Thread Updated: 2025-08-28
Release Date: 2025-08-28
Developer: ProfessorX-10

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Original Developer: Xavster Gaming

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Censored: No
Version: 1.21
OS: Windows, Linux, Mac, Android
Language: English
Other Games by Xavster: Stellar Crossroads - Callisto
Genre:

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Installation:

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Changelog:

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Developer Notes:

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DOWNLOAD
Win/Linux:

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Mac:

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Compressed
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Mac:

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Android:

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Extra: Italian Translation*
*This unofficial port/version/mod is not released by developer, download at your own risk.

​

 

[Bob69]

professorx10 congratulations on your first release! Good luck!
PS you need to insert the full size images as thumbnails for the previews.

You can maybe get a Developers badge or Modders badge by opening a ticket:

Spoiler: Click me!

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[CptValor]

was a fan of Xavster's Calisto, is there gonna be anything different about this one? are we looking at new stories set in the same universe or is this a retelling of the same story? does this one continue where the game by Xavster left off? from the screenshots i like the art style and renders look to be clean. what are the plans for this project? you have my interest, i just want to know more about your plans for the story and characters!

 

[rKnight]

Callisto by Xavster: "So gang, we are back..."

Callisto-X:

THX for sharing...

 

[NeonNetorare]

Nice!

 

[Evuhl669]

really liked Callisto so im happy you made your own version of it =) perhaps you could actually put in a harem path also?.. *hint hint wink wink*

looking forward to your updates to see what fun you can come up with =)

 

[Numuir]

looks interesting, will keep on a eye on this project, hoping will have harem ending as original did not, and pregnancy content but that's just my hope, good luck with the project.

 

[vs2011xyz]

compresss it someone this game is new but over 1.5 gb

 

[trackjack]

Looks good!

 

[Abhai]

Looks good!

did you try to play it?
wanna bet that you will change your opinion as soon as you get to the first "choices" ?

 

[Abhai]

As i have pointed above, this game has some fairly frustrating elements, such as fake choices, dead-ends/game overs and scene restarts.
To avoid racing scene loops/restarts, you have to get all 7 choices right, and here are those:

Spoiler: bike racing

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Note, even if you get all choices right, there is no chance to win the race (yup, you are losing it no matter what).
The whole purpose of "right" choices is to advance in the game, as a loser ofc

Apart from mentioned annoyances, side images/avatars (of the characters speaking atm) are another a bit annoying thing, yet thats just me...im sure there are plenty of players just loving those avatars, otherwise why would any dev bother to spend developing time creating those "add-ons"

 

[Battle Brother Anon]

What in the fuck is this race bullshit. Why devs insist on putting this tedious shit in eludes the fuck outta me.

Edit: Oh damn, thanks for the guide. I was literally about to dump this in my bin.

 

[Crow Armbrust]

THX

 

[battali0n]

3DCG, Male protagonist, Sci-fi, Creampie, Exhibitionism, Lesbian, Milf, Stripping, Vaginal sex, Monster girl, Romance, Sandbox, Multiple Non-Harem Endings, Lesbian, Group sex

Will the lesbian be optional, as if I get to decide whether it happens or not?

 

[elprebsi]

played it and what i can see it is 1:1 from the original callisto. only diff was in the start with tanya bed scene the rendering whas terrible

 

[Gundamu0079]

wait this is not how i remember callisto protocol was.. lol

 

[Saint Blackmoor]

Captain, From the comments, all indications show a mediocre turnout for this game. It is still early through.
Very good, Mr. Spock. Now give me back the Captain's Chair.
I've been farting into it for the last hour, enjoy.


SPOCK!!!!!!!!

Haha, The game looks good. Thanks for the share.

 

[bentalos]

Piss poor starts with a stupid bike race that is impossible to win, bored moving on

 

[Wizardas]

I hope Alice will take care of your medical appointments. Maybe it will teach you to create your own stuff.

 

[cab18+]

I feel stupid, i have no idea what to do. Anyone with a manual-for-idiots ?