I'm the maker of Unknown Castle: https://store.steampowered.com/app/1090650/Unknown_Castle/
My website: http://pikku-a.com/
My marketplace assets have been downloaded/bought more than 1000 times in total!
Most of my assets stand out by being very easy to use.
The best dialogue engine from my dialogue engines is "Dialogue engine - Text Boxes".
I also recommend "Inventory system easy-flexible". It's a fast and easy way to get a good inventory system for your game.
Currently working on a "cutscene engine". Subscribe to my youtube channel to know when it's ready: https://www.youtube.com/channel/UCzKIFNtRA1A2r3cJB8alHYw