Interstellar Cat Girl Expansion: Idle 😻🌌

Interstellar Cat Girl Expansion: Idle 😻🌌
Congratulations! You're finally a proud owner of your very own space mining vessel! You are also broke and don't have a crew. But don't worry, you can do all the tasks on your spaceship yourself and hire a competent crew as soon as you have earned your first space credits.
important 🚨
The game is in early alpha and is nowhere near finished
. I'm very curious about your feedback or any issues you find. Please let me know in the comments below or on
Discord
.
known issues
The game doesn't work in Firefox, please use Chrome, Edge, Brave or any other Chromium based browser
changelog 📜
On this page you can play version
0.7.0-alpha
. The latest version is
0.8.0-beta
and is available for my supporters on
SubscribeStar
with the early access benefit.
v0.8.0-beta: Daleya
May 15. 2026 (only available for
SubscribeStar
supporters)
😻 New crew member: Daleya
🌍 New planet to explore: Proximu
👁‍🗨 New artifact that boosts XP gained for all skills
🧭 Expedition, navigation and mining progress is always visible in the top bar
💸 Balancing: Raise crew recruiting prices
🌠 Balancing: The first asteroid you find is close to the spaceship
🔨 Resources can't be refined "too much" for elixirs
🚀 Performance improvements and bugfixes
🐧 Linux and Windows build
v0.7.0-alpha: The Expeditions Update
April 18, 2026  (public release: May 15, 2026)
🌍 Send crew members on expeditions to explore planets
👁‍🗨 Find rare artifacts that give you temporary buffs
🏃‍♀️ Upgrade expedition gear to explore planets faster
🧊 Balancing: You'll find more ice asteroids now
💅 Some minor UI improvements and bugfixes
v0.6.0-alpha: The Mobile Update
March 27, 2026 (public release: April 18, 2026)
🤖 Android build with performance improvements
🚀 Refining: Remove "full version required" restrictions
✨ Scanner/Trading: Sort asteroids by rarity or by distance
🔍 Navigation: See what resources can be mined on an asteroid
🐞 Minor bugfixes
older releases
click to expand
v0.5.0-alpha: The Talking Cat Girls Update
March 14, 2026 (public release: March 27, 2026)
🎶 Voice lines for your crew
✨ Overhauled main menu with sound effects
🌊 Loading screen for a smoother game start
😻 Unlock 8 new pictures in the gallery
🐞 Minor bugfixes
🚀 Even more performance improvements
v0.4.0-alpha: Animations & Refining Update
February 28, 2026 (public release: March 14, 2026)
✨ Refine your gathered resources to increase the quality
👩‍🔬 Use the refined resources to create higher tier crew upgrade elixirs
🔥 Upgrade your refinement infrastructure for parallel processing
😻 Unlock 24 new crew member pictures in the gallery
🍒 Breast expansion animations on all crew member gallery pictures
🐞 Some bugfixes and balancing
🚀 Big performance improvements for slow devices
v0.3.0-alpha: The Breast Expansion Science Update
February 08, 2026 (public release: February 28, 2026)
🥼 Science! Create elixirs from gathered resources
👩‍🔬 Use the elixirs to upgrade your crew members (includes breast expansion)
🧪 Upgrade your research laboratory
😻 Unlock 6 new pictures in the gallery (more will be added soon)
✨ Open crew member details from any crew member image you see
👷‍♂️ Game Engine Upgrade
🐞 Bugfixes and performance improvements
v0.2.0-alpha: Picture Gallery Update
January 24, 2026 (public release: February 08, 2026)
🌅 Added picture gallery
😻 Unlock 14 sexy pictures (more will be added soon)
🐞 Several bugfixes
v0.1.0-alpha: The Mining Update
January 04, 2026
🧨 Mine asteroids to collect resources
✨ Upgrade your mining system
📦 Inventory system to manage your resources
💰 The asteroid value depends on how much of it has already been mined
💱 Sell asteroid locations and resources in the intergalactic trade terminal
🐞 Several bugfixes
💥 Option to reset the game and start from scratch
v0.0.1-alpha: Initial release
December 29, 2025
😻 Hire a crew of cat girls for your spaceship
💪 Train your crew to improve their skill and efficiency
🌌 Scan the vast emptiness of space for asteroids
🚀 Navigate your spaceship to the asteroids you find
🤑 Sell discovered asteroid locations to earn space credits
✨ Upgrade your spaceship
future plans
These features will be added to the game in the coming weeks and months.
💖 Interact with your crew members
🌎 Let your crew explore planets to search for rare artefacts
😻 More crew members
generative ai content 🌹
I use generative AI to create the images of the characters because I'm not an artist. All images go through multiple iterations and usually also some manual adjustments (for example to create animations) before they end up in the game.
Code, icons, music and background images as well as the game design and ideas are are made without generative AI.
support me ✨
If you like my games and want more, please consider becoming a subscriber on my SubscribeStar page. You'll get some bonus content and early access to my games in return. 💖
more games 🧁
Thank you for playing!