600 was released in November 1981.
This title is similar in concept to Frogger, but closely resembles the much later "Super Pac-Man
" in gameplay. Konami originally wrote this game (which they mysteriously titled 600), but it was licensed to Stern for US and European distribution (released in December 1981 as Turtles), and only a limited number of games were made bearing the 600 name. Konami also licensed this title to Sega as well, which they released under the name "Turpin