Ambush was released in June 1983.
The original version was done by Tecfri and it was the first game from this Spanish manufacturer located in Barcelona. They licensed the game to Nippon Amuse for the Japanese market. And also licensed to Volt Elec for manufacture and distribution.
Alberto Zin holds the official record for this game with 591,150 points on July 9, 1984.
Game's ROM.