KnowraFree-to-playLinked fromLinked fromThe 6 pages that link to Free-to-play, each with the reason it gives.All 6Related 6Mobile gameRelated: Mobile storefronts helped free-to-play become a dominant game business model.Digital distribution of video gamesRelated: Digital delivery supports broad access while monetization occurs inside the game.History of video gamesRelated: It shifted revenue toward ongoing purchases, especially in online and mobile games.Digital collectible card gameRelated: Many digital card games fund ongoing development through optional purchases of cards or cosmetics.Candy Crush SagaRelated: Candy Crush Saga is freely downloadable and earns revenue through optional purchases.Tower defenseRelated: Many mobile tower defense games adopted this model for distribution and revenue.