Naelstrof made 3 new games since Koboldkare's last update really.
It is however sad when they don't even announce that they working on a new game or what they been doing since then. Its just a quick update or hotfix, then silence.
Raliv basically had only one collab with Naelstrof, and that was for making a weird side scrolling platformer.
After that, they basically went making this game alone.