A brush set with both Portal and Half-Life themed brushes in it. These brushes are free to use. I made some of the brushes, but some are others great work. Working Link!: http://iaa33.deviantart.com/art/Portal-and-Half-Life-Brush-Set-286447033 Sorry I cant seem to get Brusheezy to make the file work. Valve owns both of these games brushes portal portal 2 Portal & Half-Life Brush Set