Its maps throw hordes of enemies at you in growing numbers until by the end of it they’re swamping you with vehicles as your last turret’s about to fall.
While one of Dawn Of War’s design aims was to push players into early conflict by forcing them to squabble over strategic points and relics, the Warhammer 40,000 fiction is full of doomed last stands in which small numbers of Space Marines or Imperial Guard hunker down while endless waves of enemies fall on them, and those are the scenarios Survival recreates. If you’ve ever set up a skirmish battle in Age Of Empires or the like just to turtle in your base and fight off any attackers who dare approach, you’ll understand the appeal of Survival: The Art Of Defence.