The Mammoth MK3 based on Tiberian Wars. It has a T1-atom chamber and a standard chamber, two rocket launchers and a customizable equipment grid, max health and ability to toggle tree impact or rock impact immunity.
This tech can be unlocked after the Atom Bomb and base Tank are researched. Tiberium / Tiberian.

James Fire and randomflyingtaco creators of Factorio and Conquer have explicit permission to use and modify the Mammoth-MK3 for use with Factorio and Conquer.

Thanks to Houraiji_Kyuusyou for the Chinese translations.