A couple of years ago Brackeys released a level editor tutorial for unity, up until yesterday nobody had released one for unreal developers, it could really be a time saver for lots of people in this game jam (if you use unreal). 

I plan on using it for this jam, very exciting to have it back again this year!

(MODS: if posting this is against the moderation rules, can you help me think of another way to get this resource into the hands of the unreal devs in this game jam, I think they would find it pretty useful)