Sennacherib's designated successor was Italian.
Silkworm is a classic side scrolling shooter , developed by Tecmo and first released for arcade in 1988 .. Tecmo. Tecmo. scrolling shooter. Scrolling shooters. 1988 in video gaming. In 1989 it was ported to the Amiga , Atari ST , Commodore 64 , ZX Spectrum , Amstrad CPC and NES -LRB- 1990 -RRB- systems by The Sales Curve and released by Virgin Mastertronic .. Amiga. Amiga. Amstrad CPC. Amstrad CPC. Atari ST. Atari ST. Commodore 64. Commodore 64. ZX Spectrum. ZX Spectrum. 1989 in video gaming. NES. Nintendo Entertainment System. The Sales Curve. SCi. Virgin Mastertronic. Virgin Interactive. Silkworm also spawned what many consider to be a spiritual successor to the game - SWIV .. SWIV. SWIV. While SWIV was not a direct sequel , it followed the same core gameplay design of a helicopter / jeep team , albeit as a vertically scrolling shooter instead of a horizontally scrolling one .. scrolling shooter. Scrolling shooters. SWIV. SWIV. SWIV was described in the game 's manual to mean both `` Special Weapons Intercept Vehicles '' and `` Silkworm IV '' .. SWIV. SWIV