Another incarnation of invaders from outer space, this time they're celebrating their 30th Birthday. I haven't played the PSP version of Space Invaders Extreme and with the DS version being this good, I don't think I need to.
From the moment the first wave of invaders line up, you're straight in to the game. Extreme carries forward the original tactic of shoot, dodge and shoot some more by throwing in dizzying colourful swirling backdrops, power-ups of lasers, bombs and multi-shots that can be upgraded for perfect shooting, and echoing audio with sound effects synched in-time with the music.
Longevity is not this game's strong point however, with 5 short levels that can be slewed through at blurring speed thanks to the regular 'Fever Time' rounds. Boss appearances are generally weak affairs, though the Level 4 end of stage provided a tough opponent and cost more than a handful of continues to get past. (tip - your fire power degrades by 2 levels each time you lose a life).
Overall: There have been many updated versions of Space Invaders over the years and Extreme offers the best update of the lot. The backgrounds are beautiful and the multitude of play modes and point building techniques help to squeeze out a few more hours of gameplay once you've breezed through the 'Arcade Mode's' levels.