StarShip Troopers : Last Defense is a free 3D RTS game using the Glest engine, it is set in the StarShip Troopers Universe.
This is the basic data files for SST:LD 2.1. You can not play SST:LD 2.1 with this though. You will need to download a Linux or Mac version of Glest and copy the data files into your instillation. For more links ->
You can download the Linux and Mac versions here on the glest forums. This data package can also be used for anyone who already uses Glest and just wants to be able to keep there Glest installation. Credits go to Titus Tscharntke for changing all the case sensitve files. You will need to install this framwork as well - Downloads.xiph.org