Film fans will get a chance to own Sonic Mania for free as Microsoft announced their Xbox promotion.
Buying some of the movies from the Xbox store will get you, Sonic Mania, for free. The sales will go on from now until the 15th of June with movies like Detective Pikachu and Sonic the Hedgehog being some of the options available for this promo. Others that you might be interested in is The Resident Evil collection, Need for Speed, Rampage, and Assassin Creed movie.
If those are not your cup of tea, there is also the Warcraft movie which only costs $5 but then again, would you really want to spend $5 on that movie? Sonic Mania was released a few years ago and while it did get a DLC later on, that will not be included with the free version seen here.