SDI

Platforms

• ZX Spectrum

• Amstrad CPC

• Commodore 64

• Master System^*

Genres

• shoot 'em up

• shooter game^*

Players by platform

• Master System^*

  Maximum players (mode unspecified)

  1^*

• Commodore 64^*

  Maximum players (mode unspecified)

  2^*

• Amstrad CPC^*

  Maximum players (mode unspecified)

  2^*

Localized titles

• S.D.I.

Developers

• Software Studios^*
• Sega Enterprises^*
• Source the Software House^*

Publishers

• Activision^*
• Sega of America^*

• 1987

  Date precision

  Year only

• 1989 · Amstrad CPC^*

  Release date

  1989^*

  Date precision

  Year only^*

  Platform

  Amstrad CPC^*

• 1988 · Commodore 64^*

  Release date

  1988^*

  Date precision

  Year only^*

  Platform

  Commodore 64^*

• 1987-10-24 · Master System^*

  Release date

  1987-10-24^*

  Date precision

  Exact date^*

  Platform

  Master System^*

Detailed specifications