Clumsy grandfather has again busy with his time-travel shenanigans and has once again upset the course of history. This time he has a prehistoric butterfly accidentally brought back to the Stone Age. Who would have thought that would cause a single missing butterfly stroke a chain reaction that throws the present into the Stone Age! Helen must be the case even now in your hand and all the great inventions of the past that were never completed, finish. If you succeed in "The Clumsys 2 - The Butterfly Effect" to correct the course of history?