Kingdom Come Deliverance was release in 2018 using CRYENGINE. From the start it showed at a relatively small studio could produce a game that could compete in the AAA arena. They’ve release both free and paid DLC for it and now DSOG has reported how Warhorse Studios has now released the official modding tools kit for KCD.
They’ve released it via NexusMods, a well known site for modding tools and here is the page link. There you can find detailed tutorials and the dozen or so tools now provided. Everything from textures, to stories, to characters, and just about anything most would want to do is available here. I will say that these tools range in skill level from basic to advanced so read up before digging in.