I built a crowdsourced version of that general idea: <a href="http:&#x2F;&#x2F;www.slant.co&#x2F;topics&#x2F;3480&#x2F;~ios-games-without-in-app-purchases" rel="nofollow">http:&#x2F;&#x2F;www.slant.co&#x2F;topics&#x2F;3480&#x2F;~ios-games-without-in-app-pu...</a>