Chart by @FreyaHolmer : And here's a newer, more comprehensive version posted shortly after our post:

@godotengine @reduzio But Y though.

@scottmichaud @reduzio cause I XZst.

@godotengine really feel sometimes blender and godot should converge to common conventions

@angadmo They need to concede that the Y is upwards first.

@godotengine Where are all the X is up gamedev peeps?!?

@aaronsnoswell

@godotengine It's actually a lot older. Think old maps. Longitude and latitude are the origins of the coordinate system. Think z for height wins this one.

@TheNeo2k Only if you are a flat-earther.

@godotengine @reduzio Feel free to come visit if you’re feeling crowded up there. We have a nice spacious quadrant all to ourselves!

@godotengine Y is up in minecraft but I don't know if it's left or right handed.

@godotengine Y tho 🤓

@godotengine @RafaLagoon What's right-handed or left-handed?

@godotengine Don't forget about scale! Most tools including Godot use meters, but Unreal uses... centimeters... and also Valve's Source engine uses sixteenths of a foot (wtf?)

@godotengine

@godotengine no support for arms raspberry pi?

@godotengine Having Z up is why the source engine will always be the best engine 🍹

@godotengine y is up gang assemble

@godotengine Didn't this all start with Autocad 3D defining Z up in 1982 and then when Autodesk created 3D studio the convention just transferred. So, in a nutshell, lets blame Autodesk and stick with Y up :o)

@godotengine Sorry "Z up" people, but you're all wrong.