I'm estimating I've played 1000+ hours of 360 games but I have no way to clarify that.Instead I'll go by my steam library:
Gmod:320.2 hrs
TF2:280 hrs
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Skyrim for sure think I have bout 600 or 700 hours between 3 characters. Black ops 2 and ghost I have spent some time on also not sure of how long though