Official post
Hytale graphics update
Hytale is based on a custom engine that has been built from scratch over the last four years. This year, our engine developers have continued to upgrade our technology with new features, including real time shadows, improved water effects and bloom, and a host of improvements to rendering and particle...
Full article on the official Hytale site. HySphere mirrors titles and summaries from the public news feed so patch notes and updates are easy to find here.