Flu!

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Safe the farm and vaccinate all infected piggies in this chain reaction game. Author Comments: You got only one load of antiviral serum. Release it anywhere on the screen and start a chain reaction. Do not hit the pink piggies as they are healthy. 3 modes, 19 levels each, 4 kinds of piggies and 4 different obstacles. This game is made from a tutorial on blog.natan.info.