The Great Giant Sisters

The Great Giant Sisters is an unofficial DOS port of The Great Giana Sisters, a platform game not unlike Super Mario Bros. The port started as a 32 kilobyte game created for a demoscene event, which was then expanded to include more features, but is still incomplete compared to the original Giana Sisters game. It was further ported to Windows as Giant Worlds, with permission obtained from the Giana Sisters' creators to use the graphics, sounds and character like likenesses for that game.