Codename: Outbreak

The ancient doom prophecies become true, but not the way that many have imagined. A bright spot among the seas of stars attracted astronomers' attention. The studies and observations of the object allowed determining its nature as a class C comet.
The first wave of exultation was followed by surge of panic as the trajectory calculations revealed high probability of collision with the Earth.
The comet has passed in close vicinity from our planet and singed the atmosphere by its tail, raining a meteorite shower upon the surface, bringing death and devastation. As smoke and cinder eventually cleared away revealing cities in ruins and scorched Earth, people witnessed a Catastrophe...

System requirements:

Intel Pentium II 266 MHz CPU, 128 MB RAM, 8 MB Graphics card