InnerSpace
Released Jan 2018
Soar through virgin skies and dive into lost oceans as you hunt for the ancient gods of the Inverse, a forsaken realm of inside-out planets. Created by a small team of seven developers and originally funded on Kickstarter, InnerSpace is a bright, colorful exploration flying game with no horizons.
61% positive · 350 reviews
Done
All announced content has been released
High confidence
Done
All announced content has been released
High confidence
Where to buy
Steam $1.99 $19.99 −90%
Can't confirm — worth a look
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Evaluation
InnerSpace launched on January 16, 2018 as a complete exploration flying game developed by a small seven-person team. Following launch, the developer released two bug-fix patches on February 5, 2018, and then shipped a free content update on June 8, 2018 that added new airframes, skins, and quality-of-life improvements based on player and critic feedback. That June 2018 update represents the last substantive development activity from PolyKnight Games on this title. The only DLC ever released is the game's soundtrack, which shipped on launch day (January 16, 2018). There are no unreleased DLC items listed on the store, no roadmaps or announcements pointing to future content, and no developer communications after June 2018 regarding InnerSpace itself. The one news post dated after 2018 (July 16, 2025) is a promotion by publisher Aspyr for an entirely different game (Neverwinter Nights 2: Enhanced Edition) — it contains no information about InnerSpace's development. The game was released as a self-contained narrative experience, and all available evidence indicates it has been content-complete since the free update shipped on June 8, 2018.
Evidence
Developer shipped a free content update adding two new airframes, airframe skins, and gameplay improvements. Framed as a response to launch feedback; no future content hinted at.
First post-launch patch with bug fixes, tuning improvements, and minor additions. Last dedicated bug-fix communication from the developer.
Content
1 of 1 released · no outstanding content
Media
Details
Developer
Publisher
Aspyr
Achievements
14
Platform
Windows, macOS, Linux
Controller
full support
Steam Deck
Verified
Players
Single-player
About this game
Your greatest journey is within.
In the final days of the Inverse, you must help the Archaeologist recover the last remaining memories before they are lost forever. Fly through ancient skies and abandoned oceans to discover the lost history of this fading realm, where entire civilizations have died, yet their gods still wander.
InnerSpace is an exploration flying game set in the Inverse, a world of inside-out planets where gravity pulls outward instead of in. InnerSpace began as a project among college friends and evolved into a successful Kickstarter campaign in 2014. After years of development, PolyKnight is proud to welcome you to the Inverse. Your greatest journey is within.
Features:

- InnerSpace is a game about exploration, about player-driven moments both small and grandiose. Take your time, soar through the skies and dive through the oceans, and the secrets of the Inverse will reveal themselves.

- Scattered among the ruins are priceless relics, the final messages from the extinct civilizations that once ruled the Inverse.


- Adapt lost technologies to build new airframes, each with unique abilities to soar above the waters, and below.

- The Inverse is dying, but you’re not alone. Demigods still roam here, hoarding what power they have left, the keepers of secrets as old as the Inverse. Fly carefully.


- Featuring an ethereal art style and soothing electronic musical score, InnerSpace delivers a thoughtful, provocative flying experience unlike any other.
A quick note from the developers:
We started PolyKnight Games back in college, when we would meet after class to talk about new challenges in game design. We became fixated on one question in particular: "What would a flying game be like in a universe of inside-out planets?" To answer that question, we decided to put aside our career plans and form our own indie studio.
InnerSpace is not like other flying games. We want to reward exploration, both in terms of storytelling and the mechanics of flight. If you’re expecting a traditional flight sim with aerial combat, this might not be for you. If you like the idea of a plane that transforms into a submarine, then dives inside the belly of an ancient demigod, you're in the right place.
Please contact us on Twitter or the forums if you have any feedback at all, or if you just want to say hello. Thanks so much for checking out InnerSpace. We hope you enjoy the flight.
Last evaluated Jun 27, 2026
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