Category:Creeps

Fighters
Fighters are too small to target with Anti-Hull Cannons, but are easily destroyed with flak.

Freighters
Larger ships that can sometimes carry fighters on board. The hull plating on these vessels is too strong for flak to inflict much, if any, damage.

Experimental Freighters
These freighters are Upgrid TD's equivalent of "bosses." They appear during later levels of play. They are extremely difficult to dispose of, but provide an excellent mass return.