Antares is a turn based space-themed strategy game. The current rules, and the user interface, are very similar to Stars! (for more information, see for example Autohost).
The program is still early in development and very rough at the edges. Don't expect too much. Currently, only code from the CVS is available. The program is implemented in OCaml and uses the 'labltk' binding for graphics. You'll need that if you want to compile the program yourself. See the INSTALL file for further details.
Have a look at the Features and some Screenshots.