Games with Gold is “fundamentally different” than PlayStation Plus
When the vice president of Microsoft Studios, Phil Spencer talked at SXSW affirmed that between the Games with Gold from Xbox One and other programs is a big difference. This means that the Games with Gold allow their users to keep the game even if they stop paying for a subscription. Of course Spencer is trying to make a comparison between them and Sony’s PlayStation Plus which although it allows their users to access some free games, they lock them if the subscription is not paid further.
For now Games with Gold are available only for Xbox 360, but we can expect them to be released also for Xbox One, as Spencer said at the begging of February.