With the advent of consoles and computer systems that were able to handle several thousand polygons (the most basic element of "3D computer graphics") per second and the usage of 3D specialized graphics processing units, pseudo-3D became obsolete. But even today, there are computer systems in production, such as cellphones, which are often not powerful enough to display "true" 3D graphics, and therefore use pseudo-3D for that purpose. Many games from the 1980s' "pseudo-3D arcade era" and "16-bit console era" are ported to these systems, giving the manufactures the possibility to earn revenues from games that are several decades old.