Shrapnel Games is now giving an infinite discount on Strange Adventures in Infinite Space, as they offer the original game in Digital Eel's Infinite Space series completely free. The game is available for Windows, Mac OS 9, and Mac OS X. They also offer another Digital Eel game for free, a Windows match-3 game called Soup du Jour. Here's a bit on Strange Adventures in Infinite Space:

Strange Adventures in Infinite Space is twenty minutes (at a time) of pure retro sci-fi gaming bliss. Explore a randomly created universe, meet aliens, acquire artifacts in the name of scientific progress and stellar manifest destiny. If you're a fan of Weird Worlds take a trip to see where it all began. If you have yet to experience either game there's no better way to get your feet wet. Enjoy the free, full game and when that desire for more sears your soul be sure to check out the sequel, Weird Worlds: Return to Infinite Space.