I applied to Zynga through linkedin for their Game Services team, and the process moved really fast. I had one on one interview with the Engineering Director at the SF office, who asked basic concepts (how hashmaps works, write code for find if the given strings are anagram or not etc.). I got call next day morning and f2f interviews were scheduled after 3 days. I met the Engineering Manager for the game services team for the first round, and she largely asked about my current project, how would I go about selecting rdbms vs nosql for a project, and writing code to remove duplicates from a linkedlist etc. Second round was design/architecture round with a senior developer, and we spent the entire time discussing how to design a leaderboard. She was looking at the "sorted set" implementation of redis, which I was not aware of beforehand. Third round was with Senior Engineering Director, who had been in the bangalore office for a visit. He asked basic questions about time/space complexity for the given code snippet and asked me to program how to insert a number in a sorted linked list. After that I met the HR manager, who asked about expected CTC, when can I join etc. and usual HR questionnaire, and told me that they would get back to me in next 2-3 days with their response. I got a rejection mail about a week later.