Hle is a project mainly written in C, it's free.
hle stands for hiveland explorer, it will be an attempt to render the site hiveland.com in OpenGL.
create a big ball and put the world in it, texture it with sky/space.
more natural walk.
Add textures.
Add OSD.
Add Sky and Space (flat world).
every 6 hours the sky and space flips (night), it happens suddenly because of some magnetic shift.
Far down the line:
idea of a temple to venerate the block changing gods
avatars will not have name tags, only bubbles above their head.
you can choose to speak loud or not, it changes the size of the font.