In the late 21st century, an army of insect-like aliens has invaded the Earth.
Relying on collective group mind and telepathic messages, these creatures have
overthrown the dominant race on their home planet, Siria, assimilating their
technology. As the planet became uninhabitable, the new Sirians have ventured
into deep space, hoping to find a new home. Their goal was to find vertebrate
creatures, in which they could lay their eggs; they have chosen the Earth for
that reason. To avert this terrible threat, the Fist of Earth organization
sends a fighter pilot named Viper to protect the planet, navigating their
strongest weapon – the starfighter XF5700 Mantis.

XF5700 Mantis Experimental Fighter is a mission-based space combat
simulation, and a sequel to Warhead. The game utilizes real space (Newtonian)
physics for ship navigation. Mission objectives usually involve eliminating
alien ships while protecting Viper’s wingmen. The game continues the plot of
Warhead in its 90 missions.

XF5700 Mantis Experimental Fighter