These Portal themed custom PCs were created by extra tech-savvy fans: This Weighted Compaion PC was build with scrap pieces of acrylic and a spare week. [link] A month of work went into this replica of the computers terminals found behind the scenes of Aperture Laboratories. [link] Here's a dedicated termial programmed in 8080 Assembler to play the Portal credits sequence complete with a chip-music version of Still Alive. [link]