Originally posted by Suzaku:

Should be about twice that, but yeah, it's a small title. Simple textures and a procedurally generated world, with a complete lack of any story-based data (voice acting, cutscenes, etc), leads to a very space-efficient design.

lol very small. That's old school small. Interesting. Thx for reply.
Guess it's compressed for delivery and grows by half or so. Mine is over a gig too tho steam only reported 642mb downloaded, and I didn't run the game yet. It must 'proceduralize' before then.