Sometimes, through no fault of their own, rival video game developers independently stumble into the same idea.  On this week's episode of Power Button, we look back at games that competed based on similar concepts: Infamous versus Prototype, Split/Second versus Blur, and so on.   We also look at smash hit games like Street Fighter II and Super Mario Kart and inspired a glut of also-ran imitations.  It's an hour of great minds thinking alike or following the leader.  By the way, why not check out Blake's Extra Life charity goal and see if you can help him out?   Download this week's episode directly from PTB, listen with the player below, find us on Stitcher, subscribe via iTunes and Google Play, toss this RSS feed into your podcast aggregation software of choice, and be sure to catch up on past episodes if you're joining us late. Remember that you can reach us via , you can leave a message on the Power Button hotline by calling (720) 722-2781, and you can even follow us on Twitter at @PressTheButtons and @GrundyTheMan, or for just podcast updates, @ThePowerButton. We also have a tip jar if you'd like to kick a dollar or two of support our way.