Compatible emulators

Synopsis

The Martians are attacking Earth and plan to destroy all life there. A Martian spaceship is orbiting Earth and a large laser cannon is being built on Earth and it is the player's mission to hold off the Martian threat until the laser cannon is completed. To do this, the SIDO (Space Intruder Defense Organization) infiltrated a combat probe inside the Martian spacecraft.

In Martian Threat, the player controls a combat probe with the joystick. The lack of gravity will cause the probe to continue moving until reverse thrust is given. The player must shoot the Martians and their energy bombs, which will appear in four different locations. The probe can only shoot diagonally. At first, Martian bombs are green and have little energy on them. As the game progresses, the bombs turn blue, purple, and finally red. The probe can take up to ten hits from green bombs, but only three hits from red bombs. Additionally, the bombs will move faster and when they reach the probe, they will push it away. The probe explodes if it hits the walls of the spaceship.

The game has two possible endings. If the player manages to defend Earth for 64 seconds (77 seconds in PAL systems), the laser defense will be completed and Earth will be saved. If the probe is destroyed before then, the Martians will release their virus bomb and destroy all life on Earth.

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