Worst of the Retro Rip-Offs
1up has a piece looking at some of the worst blatant rip-offs of classic games. By retooling old ideas and putting new labels on them, a developer can make a pretty penny at the cost of our childhood memories. From the article: "Space Invaders, right? Nope -- it's actually Space Fever, one of the first arcade games produced by Nintendo. Lest certain internet forums break out into a rash of OMG TAITO COPIED NINTENDO threads, I'll be very clear: it was Space Fever that was the ripoff. Much like how America was taken over by Pong and clones in the 1970s, a few years later, you couldn't swing a dead neko in Japan without hitting a Space Invaders machine. The fad was so prevalent that all sorts of imitation machines sprouted up."
You might take a look at Wikipedia's article
However beautiful the strategy, you should occasionally look at the results. -- Winston Churchill