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CAT Interstellar

CAT Interstellar

A short story inspired by Robert Heinlein's:The Moon Is a Harsh Mistress

Released Oct 6, 2017 Developer Ionized Games Platforms Windows · Linux CatsAdventureCyberpunkAtmosphericCute
View on Steam ↗ $9.99 (US · as of 2026-07-26)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Data as of 2026-05-20.

72.1%positive1,078 reviews
Recommended · 0 found this helpful

“Amazing graphics. This is what a games graphics should be. This is from 2017 and so cheap!! i know its unreal but there are other AA games that dont look as good! Although short, i enjoyed every second of it. only issue i had was at the start lobby there was an invisible wall…”

— a player, Steam review · 0 hrs played
Recommended · 0 found this helpful

“recommend! the settings are amazing and so is the graphics! overall a great and easy-to-understand game :] (the fact that it's story-based is also a plus - favorite place: Greenhouse)”

— a player, Steam review · 2 hrs played
Read more reviews ↗

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-07-25.

18achievements
7.2%median completion
3.5%rarest: You Lost The Box!!!
15.3% of players 14.2% of players 12.7% of players 10.9% of players 10.1% of players 10.0% of players 9.6% of players 9.1% of players 8.2% of players 7.2% of players 5.7% of players 5.3% of players 4.9% of players 4.7% of players 4.7% of players 3.7% of players 3.6% of players 3.5% of players 15.3% 0% most earned rarest
Almost everyone has
15.3%Beginnings — Play Chapter 0
14.2%Waking Up — Play Chapter 1
12.7%Is This Mars? — Play Chapter 2
Rarest badges of honor
3.5%You Lost The Box!!! — Lose the Box
3.6%Chazz — You gotta ask Chazz
3.7%Monterico's View — Activate all the generators and then take the stairs up to Monterico's view and stand in awe at the magnificent power.

Price tracking

US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-25. Steam prices vary by region — always confirm your local price on Steam.

$9.99current · sampled 2026-07-26 08:39 UTC
$9.99lowest since tracking began2026-07-25
US9.99 USD
EU9.75 EUR
UK8.50 GBP
Australia14.50 AUD
Canada12.99 CAD
Japan1,200 JPY
Brazil32.99 BRL
China42.00 CNY

Regional prices at last sample, in local currency — Steam sets each region's price independently.

China≈$6.2 Brazil Japan Canada US Australia EU UK≈$11

Cheapest → most expensive, converted to USD at ECB reference rates (2026-07-24). Relative comparison only.

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Oct 30, 2022
Spooky Halloween Event

This is totally random but, if you want to try something totally different check out our new game The Backrooms https://store.steampowered.com/app/1825160/The_Backrooms/ This wasn't exactly planned bu

Sep 15, 2022
Android Awakening

This patch focuses on bringing some of the effects and systems like footprints, trails, volumetric effects and lighting, and IK kinematics used in CAT Interstellar: Episode II https://store.steampower

Aug 09, 2022
CAT Update 6.1.0

This is the first major content update in a while. I've been primarily focusing on CAT Interstellar: Episode II but development has taken a little longer than I expected so I thought I would push some

Feb 04, 2022
CAT Interstellar: Recast Release

https://store.steampowered.com/app/1684710/CAT_Interstellar_Recast/ Purpose So, CAT Interstellar: Recast was an effort to explore and learn all the new features in Unreal Engine 5 in the hope of using

Sep 03, 2021
Lights, Camera, Screenshot Event!!!

New DOG VII model We commissioned Ionut, the original designer of DOG, to make an ultra hi-poly version that leveraged Unreal Engine 5's nanite mesh Technology. The resulting model is about 500,000 po

Games like CAT Interstellar

From our knowledge graph — ranked by shared traits, not a black box. Each card says why it's here.

Stray Stray 97.4% · 87,268 reviews shares Cats, Cyberpunk, Robots, Open World State of Mind State of Mind 75.4% · 897 reviews shares Cyberpunk, Robots, Interactive Fiction, Open World Outer Wilds Outer Wilds 95.1% · 57,965 reviews shares Space, Open World, Sci Fi, Horror 3030 Deathwar Redux - A Space Odyssey 3030 Deathwar Redux - A Space Odyssey 94.4% · 1,000 reviews shares Cyberpunk, Space, Open World, Sci Fi Deliver Us The Moon Deliver Us The Moon 86.1% · 4,332 reviews shares Space, Third Person, Sci Fi, Exploration Ghost of a Tale Ghost of a Tale 90.0% · 2,466 reviews shares Open World, Third Person, Horror, Cute The Surge The Surge 75.3% · 5,939 reviews shares Cyberpunk, Robots, Open World, Third Person Gibbous - A Cthulhu Adventure Gibbous - A Cthulhu Adventure 88.5% · 1,188 reviews shares Cats, Interactive Fiction, Horror, Cute

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-05-20.

GenresAction, Adventure, Indie, Simulation
Player tagsCats · Adventure · Cyberpunk · Atmospheric · Cute · Third Person · Exploration · Robots · Singleplayer · Sci-fi · Horror · Indie (SteamSpy community voting)
FeaturesSingle-player · Steam Achievements · Full controller support · Steam Trading Cards · VR Support · Family Sharing
LanguagesEnglish * *
ControllerFull support
Achievements18
Estimated owners200,000 – 500,000 (SteamSpy)
Official sitehttp://www.IonizedGames.com
Minimum system requirements (PC)

Minimum: OS *: Windows 7, 8.1, 10 (64-bit) Processor: 2 GHz Quad-Core Memory: 2 GB RAM Graphics: Nvidia GTX 750 DirectX: Version 11 Storage: 5 GB available space