Quoted from bhwolf:Just saw on slickdeals that Stern pinball arcade for Xbox one is free for a limited time. No other details, but logged in and confirmed. Grab it!
The basic 'game' is free but you still have to buy all of the tables. Or I should clarify, Frankenstein is free with the base game. All the others you still pay for.
Offer is still there, I'm sure it will be the same going forward with *In Game Purchases being the standard marketing method.