Stellar Heat is an adult adventure game made with Unity by Advanced Game Labs. You play Gemma, a former military sniper turned rock-band frontwoman, as she battles evil robots in a fast-paced mecha bullet-hell setting. The story follows her past and present intimate encounters while she uncovers the secrets of a stolen ship capable of folding space, all while performing for fans. Its presentation combines 2D and 3D CG art, including AI CG visuals, and centers on combat, fantasy, and a female protagonist.
The current v0.3.1.6 build, dated October 25, 2026, is an ongoing Windows release in English and is uncensored. The latest hotfix preloads the HTML menu, fixes rare freezes, improves sound balance, corrects a hub trigger position, and updates hub waypoints. Earlier changelog notes also state that new builds are free on itch.io on release day, while Patreon supporters receive exclusive in-game codes for additional adult content.
Developer's description
Follow the story of
Gemma
, a former military sniper, now the frontwoman and lead singer of a rock band.
Help her fight evil robots in this fast-paced mecha bullet-hell game while you relive her,
spiciest encounters from the past and make sure she gets even hotter ones in the present and future.
Uncover the secrets of a stolen ship that can fold space itself, all while rocking out with your fans!
v0.3.1.6 Hotfix Notes
HTML Menu is now preloaded.
Fixed Rare Freeze-ups.
Sound balance.
Hub Trigger Position Fix.
Waypoint Updates in the hub.
v0.3.1.5 Hotfix Notes
Fixed rare cases where some of the HTML applications inside the game were not working properly on different PC setups.
v0.3.1.4 Update is now available! + Changes to Build Releases
Every new build will be free for everyone on itch.io on the same day. I need to get more eyes on the project, so there will be no more waiting periods or early access tiers.
I've also been having a hard time managing different release dates. But, of course, Patreon supporters will still get something different (and better!): Exclusive in-game codes.
These will unlock exclusive NSFW content for supporters. Each milestone build will have a dedicated spot in the game (a button on the main menu) where you can enter a code.
The latest build, 0.3.1.4, already has 21 videos in the gallery, and only Patreon members can access all of them.
With this change, we hope to build a bigger community of players who play, give feedback, and share the game, while still offering something nice to the supporters who make this project possible.
For our current Patreon supporters:
You keep your tier and supporter status exactly as they are.
Exclusive Animations and Pin-Ups are still part of your rewards.
Codes will be posted on Patreon every so often.
Content that is “earned” in-game stays available to everyone.
Demo v0.25.3
Initial Release
