Team Cherry have given their excellent action-platformer metroidvania Hollow Knight a bit of an upgrade, which you can test out on Steam in a fresh Beta test.
Not played it before? You're missing out. Hollow Knight is a classically styled 2D action adventure across a vast interconnected world. Explore twisting caverns, ancient cities and deadly wastes; battle tainted creatures and befriend bizarre bugs; and solve ancient mysteries at the kingdom's heart.
Originally released in 2017 it's had quite a few free content updates, with this brand new Beta test mainly for an upgrade of the Unity game engine they use from 2017.4.10f1 to 2020.2.2f1 which is an absolutely huge jump and upgrade to do. For the Linux version, they're also switching from OpenGL to Vulkan. Not just that though, here's what else they added and fixed up:
- Added "Borderless" option to fullscreen in video options
- Fixed uncollected Grubfather rewards being miss-able
- Enabled controller rumble (only supported for certain configurations, e.g. Xbox One controller on Windows)
- Fixed the Soul Tyrant battle in pantheons getting stuck after being defeated sometimes
- Fixed death loop if moving too high during Absolute Radiance phase 2
- 64-bit is now required for Windows
- Vulkan is now the default graphics API for Linux
- Other minor fixes
To access the Beta, you can right click on the game in your Steam library and find the Betas tab on the left. In the dropdown box it's the only one there:
So why are they doing this for a multiple year old game? Well, they're currently developing Hollow Knight: Silksong, which will no doubt be using the same base game engine. Making sure it's all in good shape for the next game is probably why they're doing this.