Quick little project, worked on the layout for 3 days (had to make my own prefabs since valve's portal prefabs only show up under ep1 and they look more like model reference geometry then anything else 
Finetuned, tweaked and made a advanced version for another week.
So its basicly a small map pack with a basc version, advanced version and then the 3 challenges.
I used the typical modular tesetchamber look so nothing fancy there.
And creds to Spine from http://www.texturehub.net for the sphere skins and button edited skin.
Main reason I wanted to do this was for the balls stuff 
[Blocked Image: http://bluestrike.steamfriends.com/maps/bs01_1s.jpg]
[Blocked Image: http://bluestrike.steamfriends.com/maps/bs01_2s.jpg]
[Blocked Image: http://bluestrike.steamfriends.com/maps/bs01_3s.jpg]
[Blocked Image: http://bluestrike.steamfriends.com/maps/bs01_4s.jpg]
