A user-made single player campaign for Unreal2, you will need an installed full retail version of Unreal 2 to play this thing.
This (the file RM_ZeroIn.un2) is one single player mission for the mod Red Planet. It was made after the first release, according to the feedback and wishes and suggestions of the fans. I guess I only used original content for this mission, so you should not need the mod to play it. If you played the mod already, then you do not have to read on, just play it, the rest of the readme is the same as in the mod release.