However, 8 years after treaties were signed, a fleet of alien ships appeared outside Earth's atmosphere.

Several super weapons were fired from the largest of the alien spacecraft, the resulting explosions causing major alterations to Earth's geography.

Fearing for the lives of every human on earth, the United States Government unleashed its hidden nuclear arsenal on the alien ships.

The resulting explosions rained down onto the planet, causing buildings to be destroyed and the air to be poisoned by radiation.

One integral feature is that if a human and a mutant are allied then they are able to benefit from each other's technology; something that most games do not allow.

The refineries in Trash, unlike such buildings in other games such as StarCraft, do not require continuous collection.

Every race has upgrades for units or special structures which can only be built on such sites.

Pipe is an inexpensive structure that is built together, and forms the basis of logistics in Trash.

Unlike other RTS games where resources seem to magically pop from one place to another where needed, in Trash they must travel through pipe.