"Micro-transactions have been a part of modern gaming for quite sometime now, giving players small titbits of additional content for relatively low prices, often coming in the form of story-lengthening DLC, exclusive gear for in-game use or additional content such as map packs and game modes to prolong the life of multiplayer experiences.
But this way of doing business is certainly not without controversy: the first major outcry in my memory being aimed at the Elder Scrolls: Oblivion, Bethesda choosing to omit the option for horse armour from the final game, instead offering it as a purchasable extra, disgruntling fans with what appeared to be an attempt at squeezing a tiny bit more profit from them."