Amazon on Tuesday launched Unity plugins to enable developers integrate in-app purchasing and GameCircle features to their Kindle Fire games and apps. The plugins will be available via its Developer page.

“Unity is one of the most popular tools for building mobile games,” said Mike Frazzini, Director of Amazon Games. “Amazon’s In-App Purchasing and GameCircle APIs help developers reach more customers, keep them engaged, and make more money. Every week millions of customers are playing GameCircle enabled games and are able to compare scores and compete against friends. We want to make it as easy as possible for developers to quickly integrate these features and our new, free plugins make it incredibly simple to do so for anyone using Unity.”

“Amazon helped to change the way the world looks at the Internet and retail,” said David Helgason, CEO, Unity Technologies. “We’re excited to see them bring their energy to games and especially games built with Unity.”

“We recently integrated GameCircle into Temple Run using the GameCircle plugin for Unity. The process was very easy, and incredibly fast,” said Keith Sheperd, Founder and CEO of Imangi Studios, and creator of Temple Run. “What would have normally taken days to integrate only took a few hours and it was all very straight forward. We will definitely use the Unity plugin to add GameCircle and In-App Purchasing to our other games.”