GLFrontier is a clone of Frontier, an Atari ST game.
Now it is compiled to C or native x86, and run much faster without 68K emulation. Most recently it has been modified to draw stuff with OpenGL at any shiny resolution with 8xAA, etc. A dandy evolution for a crappy old Atari ST game.
It uses the SDL library, and compiles on Windows (mingw) and Linux. Should work on other unixes also although this is untested. I'd like people to test it on big-endian architectures.