Pharan लिखाAlso, we haven't heard from any Spine-GameMaker users recently.
AniBoomBoom लिखाSpine works with GM:S but only version 2.1.08 it is way behind.
I have no idea HOW it's working (lol) but I'm using Spine v3.4.02 with Game Maker: Studio v1.4.1757 with no problems right now. There was a period when Spine v3 first came out where GM was having none of it (and ran brutally slow when both programs were open) but somehow everything has worked out lol (and it all runs fast again)
Two key notes though:
1) If you use meshes, you'll have to manually open the .JSON file after exporting and change the word "deform" to "ffd" so GM knows where to find the mesh animation data. Just a quick search and replace of one word and it should work perfect.
2) Most of the cool new features probably won't work, but I haven't tested them out. Shearing and all this cool path stuff, you'll want to test to see if it works before you use it. And changing slot colors and Events won't work, but those have never worked in GM. But the basic classic stuff (Transform, Rotate, Scale, Meshes, Transparency, Bones, etc) all work fine. I would do some testing with collision boxes and any other features you want to use outside of that stuff before you lock down to a specific version though.
3) For my export settings I have almost the same as Pequadt, but with both Strip Whitespaces unchecked (but Rotation, Alias, and Ignore Blank checked), and I have a min width/height of 16x16, max of 4096x4096 with Power of Two checked but Square unchecked. It looks like GM just cares that you're using a power of 2 and using that instead of Square means you're going to save more whitespace because it can make rectangular textures whenever possible. If you don't uncheck the Strip Whitespace you'll get parts of sprites leaking into other parts because GM just wants to grab rectangles off the texture.
For anyone deciding whether to use GM or Unity based on Spine support, the Unity runtime is probably a lot better with more feature support. But if you're already a GM user, you can do a ton with Spine...everything in my game here is done with Spine and GM:S: