The Walking Machine is a crawling Slug made for exploration purposes. What makes it unusual is its design, a robotic Mutated Soldier with a rotating light on the top of its head and an exposed battery on its back. The player rides astride the Walking Machine and holds onto the rains connected to its cheeks.
Gameplay-wise, the Walking Machine is a variant of the animal Slugs - meaning that the pilot rides unprotected, able to use the Vulcan but otherwise limited to tossing grenades. It possesses a lower profile, offering some degree of evasion (poison bombs roll harmlessly underneath it, for example). It can also jump higher than most Slugs.
In Other Games
The Walking Machine returns as Nadia's special attack, in which she calls it from the players base (riding it once it catches her up). While on board, Nadia is able to use its Vulcan as a long range attack and tosses Fire Bombs for her special attack.
The Walking Machine is once again Nadia's personal Slug. For her "everlasting summer" variant, she may immediately deploy piloting the Walking Machine. An improved futuristic design of the Walking Machine was also introduced for her "special" release.
- "Walk Machine Type-B" is a misnomer; all known Type-B Slugs are coloured blue.