C# 9, but with some hacks you can bump it up to C# 10 - actually works and surprisingly stable. Can't wait for them to finally migrate to CoreCLR, though.

▲

moron4hire 4 hours ago | parent [-]

I got out of doing Unity development 7 years ago because I was tired of waiting for them to migrate to CoreCLR (among many other reasons).

	▲	pjmlp 3 hours ago \| parent [-]
		Unfortunately the way they managed to stick with MonoRuntime and Burst, kind of made more harm than good, regarding C# adoption on the games industry. Many issues people associate with C#, are actually only relevant in Unity, because of this.