I'm just going to ramble about about the Ork war machines and come up with some rules. This week: real world releases.
Of course it all began with Adeptus Titanicus. That glorious game of giant robot war machine combat set during the Horus Heresy. Soon after its release in '88 a sister game, Space Marine came out and added tanks and infantry of the Traitor and Loyalist Space Marine Legions. A few months later, Codex Titanicus hit the streets and brought the Epic system into the Post-Heresy era. Rules for Imperial Guard, Eldar, and Orks. The masses rejoiced.
Space Marine had a good long run with many supplements. The last major expansion for it was a big box sex, Titan Legions, which included a pair of plastic Mega-Gargants.
The Stompa was done in plastic, and still about Land Raider sized, taller of course. Epic 40,000 didn't go over well with the fans and bit the dust six months later, so did any further plans for any new Gargants.
Epic Armageddon rose from the ashes in 2003 and was well received but not well supported by GW. The Orks got a few new metal Stompa variants but that was all for the Gargant line.
In the early Nineties, Game Workshop licensed a few companies to make 40K size resin models from the Epic scale vehicles. A sign of things to come. Epicast made a pair of Stompas, still much smaller than the current GW plastic one.
Orks wuz made ta fight and win!
Just not Spelling Bees