Ringing the changes on the Moon Buggy theme comes this motorised romp through seven periods of time.
Each stage has a similar setting of fixed mountainous or volcanic background, and fast-scrolling bumpy foreground. Bouncing niftily across the terrain comes your vehicle, a well-suspensioned buggy which moves forwards, backwards or upwards.
The buggy fires upwards and forwards simultaneously - handy for blasting the occasional boulder, volcanic debris or foot soldier, or assorted aerial attackers.
The idea is to travel ten miles (within a fixed time limit) through each of seven periods in history. Stage 1 is World War 1 with biplanes bombing your hubcaps off. Hit a plane and it dives vertically - hit it again and it explodes in a red flash. The bombs can be dodged or shot down.
Later screens take you forward in time against bombers, jets, helicopters, satellites and mutant boxes and mutant hands (the author's imagination clearly collapsed after World War III). Looks like it also had a hiccup at stage seven since you go back to prehistoric times. Never mind the chronology, feel the fun.
Options include one or two players, two skill and speed levels and starting a game from where the last one ended. Beethoven's Fifth and a variety of musical snatches burble merrily throughout. They're good but you can suppress them.
A fun variant of a popular breed of game, nicely implemented and venomously addictive.