I found a few links about this: http://gamedev.stackexchange.com/questions/11752/is-it-legally-possible-to-make-a-clone-of-the-game http://gamedev.stackexchang

I found a few links about this: http://gamedev.stackexchange.com/questions/11752/is-it-legally-possible-to-make-a-clone-of-the-game http://gamedev.stackexchange.com/questions/11752/is-it-legal... http://gamedev.stackexchange.com/questions/1653/how-closely-can-a-game-resemble-another-game-without-legal-problems http://gamedev.stackexchange.com/questions/1653/how-closely-... http://www.webpronews.com/tetris-clones-beware-you-may-be-held-accountable-for-copyright-infringement-2012-06 http://www.webpronews.com/tetris-clones-beware-you-may-be-he...