ReBoot (1994) Complete Archive Collection

The show follows the adventures of a Guardian named Bob and his companions Enzo and Dot Matrix as they work to keep the computer system of Mainframe safe from the viruses known as Megabyte and Hexadecimal, in addition to other threats. One recurring plot thread: when the User loads a game, an electrical violet cube lowers onto part of the city.

Anyone trapped inside becomes NPCs and have the chance to stop the User. If the User wins, the area is destroyed and the residents reduced to leech like creatures called Nulls. The setting is in the inner world of a computer system known by its inhabitants as Mainframe. It was deliberately chosen due to technological constraints at the time, as the fictional computer world allowed for blocky looking models and mechanical animation.