Taking place in the year 2012 in an alternate galaxy, Last Duel involves the struggle between two planets Mu and Bacula. On planet Bacula, a strong warrior tribe known as the Galden rose to immense military power and conquered all of the societies on the planet. Unsatisfied with conquering just one planet, the Galden decided to conquer a neighboring terrestrial planet, Mu. Using advanced bioships, star fighters, and motor vehicles, the Galden invaded Mu, destroying many of its cities and taking the planet's ruler Queen Sheeta hostage. The remaining royal guards of Mu are deployed in space fighters that can transform into cars to rescue the queen and crush the Galden forces.
The player alternates each level between using car and space ship. The vehicle has two main attacks one of which varies depending on the form the vehicle took. In car mode, the vehicle can jump over pot holes and enemies. While in ship mode, the vehicle can perform a barrel roll, making it temporarily invincible.
The player can select Power-Ups that including a large, slow firing laser, a twin-shot, a wide shot and options that provided side attacks. Speed-Ups were only available in ship mode. Every driving section is timed and if the player is unable to reach the boss on time, they will lose a life. However, the moment the player encounters the boss, the timer will be removed.
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Main CPU : Motorola 68000 (@ 10 Mhz)
Sound CPU : Zilog Z80 (@ 3.579545 Mhz)
Sound Chips : (2x) Yamaha YM2203 (@ 3.579545 Mhz)