Space Empires v is a 4X (explore, expand, exploit, exterminate) grand scale space stratagy game with a sandbox element.
This chapter in the series goes 3D. Also, the game is completely moddable due to players' demands.
Minimum System Requirements: Pentium 500MHz or better class machine, Windows XP, 64 megabytes RAM or better, 1024x768 or better screen resolution, 16 bit color display or better, DirectX 7.0 (or better), A video card with 3D acceleration, 500 megs hard drive space, A sound card capable of supporting MP3 and DirectSound playback. Sound card must be DirectX 7.0 (or better) compatible.