Gameitall 
You think with all this praise and all round good reviews would be enough to sell Portal 2, but Valve thinks it would be better if it was cheaper.
They dropped the price by half, down to $30 for the first person puzzler for the PC and Mac through Valve’s Steam client. For an extra $5 dollars they’ll throw in Portal 1, two of the best games of this generation.
Now if you excuse me, Science Calls!
