Continuing development where Cavedog left off... Total Mayhem includes improved versions of 3rd party units by unitmakers from the last 12 years of modding TA. All units have been bugfixed, most have been remodeled, re-textured and re-rendered to Cavedog standard. The entire game balance has been improved. This is intended to be what Cavedog would have done if they continued to support the game.
New version at last! removes a lot of units but adds a lot of polish... and also adds the Spider pack 2012 and the Tortoise Pack, and metal extractor upgrades (for both land and underwater versions). Economy has changed to a constant metal output for construction units and factories, to make managing your metal much easier.
There have also been improvements to make aircraft more useful, by making it harder for non-anti-aircraft units to hit and damage aircraft.
For more detail (and to post feedback if you like), please visit this TA Universe forum topic: