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GMTK Game Jam 2025

Hosted by Game Maker's Toolkit · #GMTKJam
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A jam submission

License to loopView game page

A flight simulator where the goal is to lose your pilot license as fast as possible
Submitted by jglrxavpok — 1 hour, 42 minutes before the deadline
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License to loop's itch.io page

Results

CriteriaRankScore*Raw Score
Audio#71931.8613.000
Artwork#77681.9853.200
Enjoyment#78921.8613.000
Creativity#83351.9853.200
Narrative#85021.3642.200

Ranked from 5 ratings. Score is adjusted from raw score by the median number of ratings per game in the jam.

How does your game fit the theme?
The goal is to do dangerous stunts in a plane, such as Loop the loops!

(Optional) Please credit all assets you've used
Ring model:
https://kenney.nl/assets/racing-kit

Skybox:
https://freestylized.com/skybox/sky_34/

Plane model (CC with Attribution) by Grapic_artplay:
https://sketchfab.com/3d-models/plane-low-poly-6f41d5adee2f4c71a3dca8c943829b7f

Bridge model (CC with Attribution) by xplanepilot:
https://sketchfab.com/3d-models/railway-stone-bridge-00df164503d14ef6ba42b39dc827dd33

Airport Pack Total (Free) by assetfactory:
https://sketchfab.com/3d-models/airport-pack-total-ad40f27ecd5e492c8149cde6a5dd56d1

FlightModel code:
https://www.jakobmaier.at/posts/flight-simulation/

Music (Funky Chunk) by Kevin MacLeod:
https://incompetech.com/music/royalty-free/music.html

(Optional) What would you like to be called if GMTK features your game?
Xavier "jglrxavpok" Niochaut (pronounced like 'ji jey el air xav pok', Xavier Niochaut is enough if pronunciation is an issue)

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Comments

HarryBicepsSubmitted1 year ago(+1)

Really impressive for such a small time frame!

Submitted
Hell Loop
Reply
Surillyacom EntertainmentSubmitted1 year ago

:O

[surillya@americansuri linux-build-5]$ ./launch.sh
./Runtime: error while loading shared libraries: libktx.so.4: cannot open shared object file: No such file or directory
Submitted
Hamb: Rotari
Reply
jglrxavpokDeveloper1 year ago

A friend had the same issue, and had to install libktx manually.
Alternatively, this build has a version of libktx inside, in 'thirdparty/KTX-Software/libktx.so.4' (which I hoped that would have been enough), you might be able to run the game with LD_PRELOAD pointing to the .so file.

Reply
Surillyacom EntertainmentSubmitted1 year ago

Couldn’t find it in the AUR, but the LD-PRELOAD fixed that error… It isn’t the only library though (and afaik LD_PRELOAD is only for a single library):

[surillya@americansuri linux-build-5]$ LD_PRELOAD=/home/surillya/Downloads/linux-build-5/thirdparty/KTX-Software/libktx.so.4
[surillya@americansuri linux-build-5]$ ./launch.sh 
./Runtime: error while loading shared libraries: libopenxr_loader.so.1: cannot open shared object file: No such file or directory

I also tried LD_LIBRARY_PATH, but that ain’t workin’ neither sadly.

Reply
jglrxavpokDeveloper1 year ago

Maybe with openxr-loader-git through AUR?
Neither my friend nor I had the issue, so there might be a *few* missing libraries :/
FYI LD_PRELOAD="libA libB" should work for multiple libraries (or using a semicolon).

Just in case I looked for .so files inside my engine build folder, here's the list:

slang/slang-2025.10.4-linux-x86_64/lib/libgfx.so 
KTX-Software/libktx.so 
KTX-Software/libktx.so.4 
KTX-Software/libktx.so.4.1.0 
OpenXR-SDK-Source/src/loader/libopenxr_loader.so 
OpenXR-SDK-Source/src/loader/libopenxr_loader.so.1 
OpenXR-SDK-Source/src/loader/libopenxr_loader.so.1.0.32.1 
slang/slang-2025.10.4-linux-x86_64/lib/libslang.so 
slang/slang-2025.10.4-linux-x86_64/lib/libslang-glslang.so 
slang/slang-2025.10.4-linux-x86_64/lib/libslang-glsl-module.so 
slang/slang-2025.10.4-linux-x86_64/lib/libslang-llvm.so 
slang/slang-2025.10.4-linux-x86_64/lib/libslang-rt.so

Everything related to slang should not be necessary to run the game.

I want to already thank you for your patience!
Reply
Surillyacom EntertainmentSubmitted1 year ago

I thank you for your will to fix it! So, the issue is even more complicated. I found the openxr package on the AUR, but it doesn’t install for some mysterious issues

-> Failed to install the following packages. Manual intervention is required:
openxr-loader-git - exit status 5

I did do the LD_PRELOAD with multiple files - which works with semicolons (I forgot how environment variables worked smh), thing is… I assumed it’s also in the thirdparty folder, so this is what happened:

[surillya@americansuri linux-build-5]$ ./launch.sh 
ERROR: ld.so: object '/home/surillya/Downloads/linux-build-5/thirdparty/KTX-Software/libktx.so.4;/home/surillya/Downloads/linux-build-5/thirdparty/OpenXR-SDK-Source/src/loader/libopenxr_loader.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
./Runtime: error while loading shared libraries: libktx.so.4: cannot open shared object file: No such file or directory

So, I got the same libktx error again, and another (I have honestly no idea what it means with “shared object file”), but so I looked for the file in the first place, but it doesn’t seem to be shipped :o image.png So maybe - I either need that file / those files, and / or LD_PRELOAD has an issue with multiple libraries or something - actually, I just tried again, using space instead of semicolon, and the issue changed again, I think now it just means that libopenxr_loader.so.1 is missing:

[surillya@americansuri linux-build-5]$ LD_PRELOAD="/home/surillya/Downloads/linux-build-5/thirdparty/KTX-Software/libktx.so.4 /home/surillya/Downloads/linux-build-5/thirdparty/OpenXR-SDK-Source/src/loader/libopenxr_loader.so.1"
[surillya@americansuri linux-build-5]$ ./launch.sh 
ERROR: ld.so: object '/home/surillya/Downloads/linux-build-5/thirdparty/OpenXR-SDK-Source/src/loader/libopenxr_loader.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
./Runtime: error while loading shared libraries: libopenxr_loader.so.1: cannot open shared object file: No such file or directory

At least that’s what I think it is… Don’t take my word for it though.

Reply
jglrxavpokDeveloper1 year ago

Yes I forgot to ship some libraries :/


The Windows version can be launched via Steam, with the following configuration.


However it takes a long time to load, probably due to the console spam.

Reply
Surillyacom EntertainmentSubmitted1 year ago

Hmm… I tired with no compatibility tools selected, SLR 3.0, SLR 1.0, Proton Hotfix and Proton 9.0-4, but nothing - the button just returns to “Play” again in a short time, and my PC is not crying, not showing any sign of anything happening. This is the setting: image.png So that doesn’t seem to work? What Proton do you use? I also tried both soda and syswine in bottles, not giving anything at all, so I tried the wine shell, giving me this:

Z:\home\surillya\.local\share\bottles\bottles\windont>Z:\home\surillya\Downloads
\windows-build-4\Launch.bat

Z:\home\surillya\.local\share\bottles\bottles\windont>"./RelWithDebInfo/Runtime.
exe" game_data/LoopGMTKJam.json
Can't recognize '"./RelWithDebInfo/Runtime.exe" game_data/LoopGMTKJam.json' as a
n internal or external command, or batch script.

Yeaaah… I don’t know if you want to continue error fixing, or just say it doesn’t work for me… But maybe you have some special proton version?

Reply
jglrxavpokDeveloper1 year ago(+1)

I tried with Proton Experimental.
If it still does not work for you, I don't know what else to try...

Reply
Surillyacom EntertainmentSubmitted1 year ago

Naww, I tried again with syswine, but yeah, this is not gonna work. No mesh-shader (am on vacation, and don’t have my real PC here):

Device Intel(R) Iris(R) Xe Graphics (RPL-P) is missing following extensions:
        VK_EXT_mesh_shader

Z:\home\surillya\Downloads\windows-build-4>

Thanks though. But I sadly can’t try it, apologies.

Reply
AruseusSubmitted1 year ago

Unfortunately requires mesh shaders to run which my GPU doesn't support

Submitted
Silence of the Wolves
Reply
jglrxavpokDeveloper1 year ago

The game does not use it but the engine requires it by default, sorry I forgot to disable it for this release  :/
By curiosity, which GPU do you have?

Reply
AruseusSubmitted1 year ago

Still on my old GTX1060 which is about 9 years old now but still works lol.  I think it's the last nvidia generation that can't do mesh shaders yet.

Reply
zeroBoundSubmitted1 year ago

How do you install/play it? I didn't see an .exe file in the downloadable zip (I'm on windows).

Submitted
Mobius Shoot
Reply
jglrxavpokDeveloper1 year ago

There is a Launch.bat file inside the zip which runs the exe inside RelWithDebInfo with the correct folder and arguments to run the game.

Reply
zeroBoundSubmitted1 year ago

Yeah I tried that and it didn't work... I wonder if it's my computer that's the problem (it's from 2015)

Reply
jglrxavpokDeveloper1 year ago

It's possible your GPU is too old. Aruseus has posted that their GTX1060 does not support mesh shaders, which are another requirement for the engine (even if the game does not use them). I've updated the game description to mention mesh shaders, but sadly I don't think you will be able to play the game :c

Reply
Deleted postSubmitted1 year ago
Deleted 346 days ago
Reply
jglrxavpokDeveloper1 year ago

What GPU do you have?

Reply
Deleted postSubmitted1 year ago
Deleted 346 days ago
Reply
VolkerSubmitted1 year ago(+1)

It's been a while since I last flew a plane in a game. The plane feels good and the music sounds nice. I had fun completing the levels. Good variety of challenges.

Submitted
Pyrodrome
Reply
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