The virtual has been subject to architects since the Domus Aurea, colorful gothic windows or the Hall of Mirrors in Versailles. Today, the computer crreates space and it is spoace. Space has not lost its relevance, and is now reloaded as a hybrid real virtual environment, bodily perceptible within a virtual alter-ego. The computer becomes "home' for millions of people spending their time in 3D virtual worlds. These worlds grow, created by game designers, programmers, or — most importantly — by the people themselves. Yet these virtual worlds are created without architects, like the real world. It is now time for architects to discuss this increasing field: to address the issue of embodiment, immersion, interface, and perception of virtual worlds and start architectural processes.