Gameroom basement flooring?
I used those big black plastic sheet which is used to surround the fundation for water proofing bought in HD, cost $124 enough to cover 400 sq ft. these sheet are not flat, but with regular pattern with plastic cylinders which will raise the flooring, in case water goes underneath for whatever reason, the water has space to travel and evapoluate to air (in theory), I then put 4x8 OSB board on top of this thick plastic. This is very similar effect as the other product Dricore, I will not say they are exactly the same, but similar, and use similar theory. I do it for my whole approx 900 sq. feet basement cost me total $540 CAD. I spend 8 hours altogether to get this done for the whole basement.
I think after you have wood subflooring, you can do carpet, tiling,..etc. with out much concern, considering the wood subflooring is water proof, which I believe it is in this case.