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

>>> TECHNICAL DETAILS
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Sega System 16A hardware
Game ID : 317-0027
Main CPU : 68000 (@ 10 Mhz)
Sound CPU : Z80 (@ 4 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
Another version runs on the Sega System 16B hardware.

>>> TRIVIA
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This game is also known as 'Defense'.
Alfa Records released a limited-edition soundtrack album for this game (Sega Game Music Vol.3 - 28XA-109) on 10/10/1987.

>>> 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.

>>> DESIGNERS / PROGRAMMERS / STAFF
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Planed by : Black Holl Tomo
Project leader : Joe Kacchan
Programmers : Sweet Tohchan, Anatano Pideshi, Ippo Ogapi, Defended Your State
Character designers : Saitama Kenji, 8940 KON
Scene designer : Henchan
Music by : Katsuhiro Hayashi (Funky Gerogero)
Mechanical engineer : MI.U.I.Hachi
Enemy creation : Demon Taka
Data adjust : Nanno Icchan

>>> GAME PORTS TO OTHER SYSTEMS
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* Consoles :
Sega Master System (1987)
Sony PlayStation 2 (2005, 'Sega AGES 2500 Series Vol. 21 SDI & Quartett ~SEGA System 16 Collection Vol.1~')
* Computers :
Commodore Amiga (1987)
Amstrad CPC (1988)
Sinclair ZX Spectrum (1989)
* Others :
Mobile phones ('Mobile SDI', 2002)

>>> OTHER GAME RESOURCES
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Game's rom.
Machine's picture.