We are planning to build a series of arcade-type mini games. Each mini game will have different levels of difficulties. The easier difficulties will be free to play and the more difficult ones will need to be unlocked through in-app purchase.
(1) Build an "arcade" app which contains all the games. Advantages:
(a) The app will have more content and it might be more attractive to users to buy the in-app purchase upgrade.
(b) Marketing effort/budget can be all focused to one app.
(c) Less effort for maintenance/upgrade.
(2) Release the mini games as separate apps. Advantages:
(a) Quicker time to market. Each game can be released individually as they are completed.
(b) Have a more impressive app portfolio and more cross promotion opportunities.
Just want to have some opinions here from a marketing/promotion perspective.