my FPS script awsd+jumping wall sliding

It’s not true… I use Linux and Chicken, I export models without problems… I’ve a simple Ubuntu installation.

The level editor was a summer CMU project, I haven’t seen updates on it after that. But Blender is a complete level editor, and it’s well-integrated with Panda (or, if you target FPSs specifically, you could use specific map editors (I used to use GtkRadiant and QuArK) and write some importers - something like this).