One of Gambas' few major drawbacks is that it only runs on Unix-like systems. Having upgraded my partner's machine the other weekend however, including jumping from Windows 7 to 11, I was finally able to give WSL2 a go.
It took only three commands to install WSL, containerized Ubuntu, and then Gambas.
Hardest part was that I had to update apt before it would install anything for some reason.
When in Rome, I decided to give Cygwin another go, which has been able to run graphical Gambas since 2016. I don't think I have tried since back when you had to build from source, so I was able to get it going this time just using the graphical installer, although knowing which packages I needed to install beyond Gambas itself could have been more intuitive. In the end, installing XFCE seemed to supply everything I needed.
It seems to run a bit slower than WSL, but I had fewer issues running applications through it (specifcally, the mouse tracking in OpenGL does not seem to work in WSL, in Gambas and in other apps such as OpenArena and Xonotic).
Both measures ran most of my games quite satisfactorily.
https://pigalore.miraheze.org/wiki/Running_Gambas_Programs_in_Windows