Target Alpha is a four-player reimagining of Gottlieb’s classic one-player wedgehead El Dorado. Contrary to El Dorado’s old west theme, Target Alpha features a science fiction theme complete with flying machines, laser guns and space helmets. A few features are stripped away from the original El Dorado ruleset, and a few are added to compliment the multi-player operation. The game features fifteen drop targets, including a massive row of ten that runs across the top of the playfield. Gottlieb also released Solar City, the same design with new art and two player operation, the same year.