Though less common in the mobile game industry, this model can work well for some games, particularly those with high production values or niche appeal. The final decision rnabob rummyegarding monetization strategy will be made in light of the game's characteristics, target market, and overarching business objectives. Since they enable developers to sell virtual goods, power-ups, & other upgrades that improve the gameplay experience, in-app purchases, or IAPs, have grown to be a sizable source of income for many game apps.