DevelopmentUntil a couple of months before its release, the game was to feature two different types of levels, alternate levels being platform shooters. However, they decided that this section wasn't up to standard, and decided to stick to the basic shoot-em-up.
The game was ultimately in development for three or four years. The Walker project went into limbo for a year or two, during which time someone in DMA Design came up with the idea for Lemmings. Finally, Walker was released in 1993.
Walker's HeadScott Johnston rendered the head of the Walker using a small 3D program he wrote, to get all the different positions right. He then went in with a pixel drawing program to touch up the result.
Information also contributed by B.L. Stryker and Martin Smith.