[nylonstrung]

You're probably thinking of Lore by Epic Games which was announced recently and seems to be well-received so far and natively supported by Unreal Engine

[ChrisMarshallNY]

Yup. That’s it.

I remember when one of the engines (either Unreal or Unity), shipped with Perforce included.

[flohofwoe]

There was also PlasticSCM, which was acquired by Unity a while back. I'm hearing differing opinions about whether it's good or bad though.

https://www.plasticscm.com/

https://unity.com/features/version-control