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User Reviews

There are no reviews for this game.

Our Users Say

Category Description User Score
Gameplay How well the game mechanics work and the game plays. 2.7
Graphics The visual quality of the game 2.7
Personal Slant A personal rating of the game, regardless of other attributes 3.2
Sound / Music The quality of the sound effects and/or music composition 2.7
Story / Presentation The main creative ideas in the game and how well they are executed. This rating is used for every game except compilations and special editions which don't have unique game content not available in a standalone game or DLC. 2.7
Overall User Score (6 votes) 2.8

Critic Reviews

MobyRanks are listed below. You can read here for more information about MobyRank.
It's all a bit like an updated version of Missile Command, and while it's not particularly addictive or attractive to look at it's a fair buy for four quid.
Commodore User (Jan, 1989)
I can't say I'm absolutely wild about SDI. It's a good old blast, no question about that, and if you liked the coin-op you won't be disappointed, but I guess it is just a bit too crude for a sophisticate like me.
Not a great fan of the arcade version I can't really say if it has been converted well, but from what I have seen in the arcades it looks very similar. The play is fast and because of the progressing levels makes the game quite addictive. The game does lack a little colour (especially the explosions) mostly using dark tones, and the graphics could do with some more variation. The sound on the title screen is acceptable but not more as are the sound effects, but both could have done with a livening up to improve the atmosphere. On the whole an addictive and fun game but not really enough in it to make it one of the greats.
Zzap! (Mar, 1989)
I've only played this a couple of times in the arcades, but it's still enough to see that Activision have done a reasonable job of converting it to the 64, even down to the dancing duck if you get a 'perfect' rating. The gameplay's all right, if a might repetitive, and is portrayed by some pleasant spacey graphics. The sound on the other hand is pretty naff, consisting of a few basic effects and a dodgy theme tune. Still, worth checking out if you're into the coin-op.
Commodore Format (Jun, 1991)
It's a jolly little blast with fairly good graphics and sounds. It makes a good first impression but I can't see interest lasting.
The Commodore version fares a lot better, with neat backdrops helping to boost gameplay. Without the coin-ops gloss the similarity of each level brings very repetitive play with it, especially on the Amstrad and Spectrum.
A conversion of the mediocre Sega coin-op. Planetary defence is the name of the game as you fire your laser satellite at the marauding nuclear warheads. SDI is a simple game that was average on all counts when it was first released for £9.99. There are much better budget arcade conversions available for the C64, so keep well away from this effort.
Commodore Force (Aug, 1993)
I find it tedious, dull and naff. At no point during play, does the shoot-em-up action of SDI rise above mediocre. I never realised nuclear war could be so yawn-inducing (sigh).