N.B. MEGA SWIV (aka FIREPOWER 2000) for Mega Drive/Genesis and SUPER SWIV for SNES are console games very different in design to SWIV, released initially for 8/16-bit computer platforms only.
 Game design by Ned Langman, Ronald Pieket Weeserik and Dan Marchant. Coding by Ronald Pieket Weeserik and John Croudy. Graphics by Ned Langman. Music by Andrew Barnabas. SWIV was The Sales Curve's spiritual successor / unofficial sequel to Tecmo's 1988 coin-op SILKWORM. SWIV = Special Weapons Interdiction Vehicles / Secret Weapons Installation Verification / SILKWORM IV Original release contents include a game poster, ST DRAGON postcard and a free badge (see Miscshot).