Neo Geo Roms Metal Slug 6 Play
Donkey Slug: A donkey with a mounted vulcan cannon. Like all animal slugs, the donkey provides no protection to the rider. Later on in the level, the Donkey Slug acquires a two-wheeled out-house cart mounted with a Metal Slug cannon that replaces the player's grenade with metal slug cannon shots.
Slug Digger: A multi-purpose subterranean digger as well as a helicopter. It has retractable drills on the left, right, and bottom sides, which are used to drill into the earth, and sports two vulcan cannons, which can also be used to drill through things by firing bullets into the dirt. The players cannot get out of the slug, neither can they perform the metal slug attack with it. If the slug digger is destroyed, the player is killed. Its cannon shot is a mine that stays in place until an enemy touches it or it is shot.