HB codes are intended for personal use only, so I would say hog all the games.

For one thing, their offers are bundles, after all, and you wouldn't be able to get these games separately for whatever it was that you paid. To quote their FAQ: "Please consider your bundle a 'unit'."
Second... At the end of the day, "Each purchase is intended for use by one individual" is a pretty concrete message, and I'm sure its Terms of Service equivalent doesn't offer any wiggle room for exceptions.