Posted July 16, 2025 by Gumpy Function
In the last update, I released a GB Studio engine.json Guide. This guide aimed to help GB Studio users on their journey into the mysterious realm of C programming and custom plugin creation. As this guide is applicable to all GB Studio users and not just those looking to make a platformer game, I have decided it's best to remove the paywall and instead include it in the free version of the Let's Build a Platformer! course for the benefit of the wider community.
You can now find the GB Studio engine.json Guide.pdf within the root directory of the free version. For a more detailed breakdown of what the guide includes, you can read the previous devlog here.
And while I'm here, I'd like to share some future plans I have for the LBaP! course.
If you're not yet aware, the develop branch of GB Studio has just been updated to include an expanded platformer engine - based on Hauntology's own Platformer+ plugin. I've been working with the GB Studio dev team these last few months, helping to expand on its features even further and while there are still many similarities between the Platformer+ plugin and the updated default platformer engine, projects using GB Studio 4.1.3 and Hauntology's P+ plugin will not be directly compatible.
This includes the LBaP! project file, obviously. To help anyone currently making a platformer game using GBS 4.1.3 and wishing to migrate their own project to the next version of GB Studio, I have begun the process of migrating the LBaP! project and developing a detailed migration guide. This migration guide will be included as a bonus Lesson 6.5 and packaged with the free version of the course.
I covered debugging your game in some detail in the full version of the course, but as it's all confined to comments within the project file, I felt this topic would be better suited as its own PDF guide much like the GB Studio engine.json Guide is structured. As such, I will be revisiting this topic and expanding on how to use GB Studio's debugger in greater detail. As this topic is also applicable to the wider community, I plan on releasing this guide for free as well.
So, that's it for now. I hope you find some value in my new (and now free!) GB Studio engine.json Guide!
Happy coding,
- Tom (Gumpy Function)