what game engine makes this game ?

Would someone please tell me how to select and use lockpicks? I don't see any lockpick keys in the keybinding menu. I think I might be missing something. Thanks.

I noticed the Developer has not left any replies since last August!

How large a world does this take place in initially?

will this ever become online multiplayer? looks to me like its a more polished version of 7 days to die only solo play only I would like to see this multiplayer