Sequels and Ports
The game received a sequel in the same year titled Head On 2, and the concept was adapted by Nintendo for their version, Head On N. Head On later appeared in the Sega Saturn collection Sega Memorial Selection Vol.1 and in the PlayStation 2 collection Sega Ages Vol. 23. A mobile phone exclusive version titled Sonic's Head On was released exclusively in Japan in 2000.
The game was ported to the Commodore 64 in 1982, as well as the Commodore VIC-20, Apple II, TI99/4A and Game Boy. Other variations of the formula appeared on the Amiga (as "Car Wars"), MSX (as "Killer Car") and ZX Spectrum (as "Car Chase").