Google Index Variation
Google as we know has dozens to hundreds of datacenters around the earth. If they had just one then we would lag big time when trying to visit their web site let alone search anything. This is another reason they are one of the largest companies in the world. When one is down the other one takes its place.
Google’s index rates vary from one datacenter to another. I am not saying that EVERY single datacenter will give you a different number of indexed pages, I am saying that you are likely to get at least a few different variations just so you know. Try to find the index rates of Gamers-Forum.com in different datacenters and see if you get the same number every time.