The way it stands now, this seems like a useful self-teaching tool, for those who want to build their own PCs. Add a few links to companies that sell components online, and it could also be a pretty nice marketing tool too.
PC Building Simulator is a game for Windows and Linux devices in which you simulate the building of desktop computer systems. Building PCs, as opposed to buying them out of the box, can be a very rewarding experience. Apart from gaining knowledge on how the PC works, it allows you to pick the components and layout that you want.