Crashsite

As an agent of a private military contractor, you investigate mysterious alien activity, that takes place around a multidimensional object, that exploded into existence after an accident in a secret lab somewhere in Northern America. The invaders have a lot of problems at the beginning. Their ships seem to break down. They start to pose a bigger threat as the game progresses. Extraterrestrials destroy cities and format the terrain to make it suitable for colonization. The goal of the crew of mercenaries is to prevent them from progressing.