Mojang the continued development of "Minecraft". Within a year, the company grew to a size of twelve employees, with their second video game, "Scrolls", in development, as well as serving as the publisher of "Cobalt". In 2011, Napster founder and former Facebook president Sean Parker offered to invest in Mojang, but was declined. By March 2012, the company had accumulated revenues of over $80 million. In September 2012, Mojang began a partnership with United Nations Human Settlements Programme called "Block by Block", which entails having "Minecraft" players constructing sites in-game to use as a basis for assisted development of the village
Minecraft mods owners more control over their "Minecraft" environments. With the release of the alpha version, the first client-side mods began to appear; these added relatively simple things, like other textures or amendments to the in-game compass. Towards the end of 2010, new mods were released which featured more content than previous ones. "Minecraft" was now preparing to move into its beta development phase, and popular mods such as "IndustrialCraft", "Railcraft" and "BuildCraft" were first released to the public. As opposed to their predecessors, these mods had the potential to change the entire game instead of simply tweaking minor aspects of it.