Game publishers have mixed feelings about IGA. IGA can create new revenue streams; in some cases publishers’ profits have increased by an extra $1–2 per game unit sold (in addition to the typical $5–6 profit per unit). Some mobile phone games have replaced charging fees to gamers with IGA, and it is an important source of income for browser-based and other Internet games that do not feature micro-transactions or pay-to-play. Some publishers see IGA as a way to offset growing game development costs, while others believe IGA will allow them to experiment with gameplay by reducing the financial risks associated with game development.