Threshold (video game)

Threshold
Several fictional spaceships illustrated in front of several fictional planets. The word "Threshold" is printed at the top, and "SierraVision" is printed at the bottom.
Box cover with a C64 sticker
Developer(s)On-Line Systems
Publisher(s)On-Line Systems
Tigervision (2600)
France Image Logiciel (Thomson)
Designer(s)Warren Schwader
Programmer(s)Apple II
Warren Schwader
Ken Williams
Atari 8-bit
Peter Oliphant[1]
Platform(s)Apple II, Atari 8-bit, Atari 2600, VIC-20, Commodore 64, ColecoVision, Thomson
Release1981: Apple, Atari, VIC
1982: 2600
1983: C64
1984: ColecoVision, Thomson
Genre(s)Fixed shooter

Threshold is a space-themed fixed shooter written by Warren Schwader and Ken Williams for the Apple II and published by On-Line Systems in 1981.[1] Inspired by Sega's Astro Blaster arcade video game, Threshold introduces many enemy ship types and wave formations as the game progresses. Reviewers found the variety distinguished the game from the many similar shoot 'em ups.

Ports to other systems were released on ROM cartridge: Atari 8-bit computers and VIC-20 in 1981, Commodore 64 in 1983, and ColecoVision and Thomson computers in 1984. An Atari 2600 adaptation was published by Tigervision in 1982.[2]

Schwader also wrote the 1983 Apple II platform game Sammy Lightfoot.[1]

  1. ^ a b c Cite error: The named reference giantlist was invoked but never defined (see the help page).
  2. ^ "Atari 2600 VCS Threshold". Atari Mania.