There's no built-in functionality for verifying the existence of a folder. 
File scanning can only be used to report on specific files, not folders, though you could probably create a deployment package to verify the existence of a folder. 
Not sure how accurate this will be, but a quick online search seems to suggest that machines with Microsoft Games enabled should have a value name called LastRunTime under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\GameUX\MachineSettings. You could scan this value with 
custom registry scanning and then run this report to list machines with Microsoft Games enabled:
Select Top 1000000 tsysOS.Image As icon,
  tblAssets.AssetID,
  tblAssets.AssetName,
  tblAssets.Domain,
  tblAssets.Username,
  tblAssets.Userdomain,
  tblAssets.IPAddress,
  tblAssets.Firstseen,
  tblAssets.Lastseen,
  tblAssets.Lasttried
From tblAssets
  Inner Join tblAssetCustom On tblAssets.AssetID = tblAssetCustom.AssetID
  Inner Join tsysOS On tsysOS.OScode = tblAssets.OScode
Where tblAssets.AssetID In (Select Top 1000000 tblRegistry.AssetID
  From tblRegistry
  Where
    tblRegistry.Regkey Like
    '%SOFTWARE\Microsoft\Windows\CurrentVersion\GameUX\MachineSettings' And
    tblRegistry.Valuename = 'LastRunTime') And tblAssetCustom.State = 1
Order By tblAssets.Domain,
  tblAssets.AssetName