Alien Invaders - Plus! is a 1980 Arcade game released on the Magnavox Odyssey². Mark said that he wasn't sure if there was an orginal Alien Invaders. He said that the scoring takes time to get used to. He said he likes the box art for it. He said the worst part was when you ran out of triangles, because you just ran back and forth waiting to be killed. He said it was challenging and recommended it.