ok so, i played this game around 12-13 years ago. It was a exploration first person view game in a different planet. I remember at the start i and my two other companions have small hovercraft or something like that, i could get out of the airship and could walk holding my gun or move using that airship. it was really fun. i could also build construction buildings for mortars, vehicles (Including a air bike), to fight alien ships. i played this on a pentium 4 computer, it was so much fun. i only played it for a day but still it is in my memory.. i need to complete this game so please help me find it. it is not top down as far as i remember, i had first person view and travel in airship in the planet and build like bases in different areas and fight alien ships.