I interviwed for zynga in june in a weekend drive.

I cleared all the rounds but they did not extend offer to me, probably because I was already holding a decent offer which they could not match.

interview process:

1. DS algo round
   a. I do not recall the question but it was LC medium
   b. Same

2. Design round: Design a kafka MQ
   a. How will you create and handle different topics
   b. How will you scale it
   c. How will msg be pushed or pulled

3. HM round:
   a. Astroid collision problem from LC
   b. Discussion on past projects
   c. Discussion about company
   d. Why do i want to join a gaming firm

I gave ans to all the questions and was informed by HR the same that I have cleared the interview.
I dont know why they did not extend the offer