S.W.I.V. is a top-down shooter for 1 or 2 players created by Random Access and published by The Sales Curve in 1991. The game was released for the Amiga, Atari ST, Commodore 64, ZX Spectrum, and other platforms.
The game is considered the unofficial and spiritual successor of Silkworm, an arcade game created by Tecmo and ported to Amiga and other home computers by The Sales Curve. The gameplay is a bit different because unlike Silkworm, SWIV is a vertical shoot ‘em-up. But the helicopter and the jeep are still there, as well as tons of weapons and power-ups you can unleash in a unique unlimited level full of enemies.
Technically perfect - e.g. special technique allows continuous action without loading time - playing this in co-op with a friend is almost mandatory, and extremely fun.
S.W.I.V deserves to be in the list of the best Amiga vertical shooters, that includes Hybris, Xenon, Battle Squadron: The Destruction Of The Barrax Empire, Banshee and others.