Defense (c) 1987 Sega.
A strategic challenge in the science of offensive & defensive warfare.

>>> TECHNICAL DETAILS
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Sega System 16B hardware
Game ID : 317-0028
Main CPU : 68000 (@ 10 Mhz)
Sound CPU : Z80 (@ 5 Mhz)
Sound Chips : YM2151 (@ 4 Mhz), UPD7759 (@ 640 Khz)
Screen orientation : Horizontal
Video resolution : 320 x 224 pixels
Screen refresh : 60.00 Hz
Palette colors : 6144
Players : 2
Control : 8-way joystick with button, trackball

>>> TRIVIA
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This game is also known as 'SDI - Strategic Defense Initiative'.

>>> TRICKS AND TIPS
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* Flicky Mode :
1) Insert a credit (ONLY 1 credit)
2) Input code Up(x2), Down, Right, Down, Left, Down(x2) with Player 1
3) Input code Player 2 Shot button x3 then press Player 2 START button
4) Satellite (player character) will change to Flicky at the starting of Stage 2.

>>> OTHER GAME RESOURCES
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Game's rom.