Traxx

Traxx is a computer game released in 1983 by Quicksilva for the Sinclair Spectrum and Commodore VIC-20. It was inspired by the arcade game Amidar. Traxx is a "painter game" in which the player controls a moving cursor which must traverse the entire length of a grid painting all of its sections. Various enemies also inhabit the grid and will try to kill the player. Source: Wikipedia, "Traxx (game)", available under the CC-BY-SA License.