Steam Tank

A Steam Tank is a Tank which is powered by a Steam Engine. The US government experimented with this idea in 1918, building a functional prototype with a 370kw engine armed with a flamethrower, but ultimately turned it down. A common thing in steampunk settings.

Warhammer Fantasy

Despite being for the most part at a 1600's level of technological development, the Empire of Warhammer Fantasy Battle has METAL BAWKSES as well. They were actually invented by Dwarfs and thanks to the alliances between German and Scotsman in Warhammer Fantasy, Humans ended up with the plans. Dwarfs refuse to use anything that hasn't been tested in the shop for at least a few hundred years before the first field test (although newer generations of Dwarfs are rapidly using newer and newer creations, which pisses off the older Dwarfs to no end. The fact there's fewer old Dwarfs to beat them senseless for showing "Elvish Sense" may have something to do with it...) so these tend to only show up as scenario options for them or as proxies. The general design may have been simplified for the Deathroller in Blood Bowl that Dwarf teams bring though.

As one would expect, they're usually covered in symbols of the Empire. Griffons, skulls, Germanic flags, wreaths, and crossed muskets. 40k fans are tsundere for them, partially because after decades of seeing Rhino after Rhino the design for the Steam Tank of the Empire is a glittering prize (to say nothing of the MANLY mustache and glorious METAL hat sported by the man on top who wants to hit things with his JEWELED sword). On the other hand, anything that isn't Warhammer 40k is heresy so they can't like it. Oh well!

Warcraft

Originally, Warcraft III had a heavily armoured siege unit called the Steam Tank for the Human Alliance faction. However, its name and design (along with the Gyrocopter) were changed for the expansion and World of Warcraft, quite possibly as a result of papers being thrown at them by GW's lawyers. They are henceforth known as the Siege Engine and Flying Machine.