The entire ad is a symbol for Apple's iPad replacing everything being crushed. It's not "Space Imploder", it's every single arcade game every made. It's a representative for arcade games in general. Nobody should take "Space Imploder" literally. They can't use "Space Invaders" likely because of copyright, but I'm sure that they would have in this ad if they could have just so that someone wouldn't end up missing the point and suggesting "but, Space Imploder doesn't even exist".