There’s a lot at stake in the changes that Facebook made to its platform tonight, which will affect how users experience games on the world’s biggest social network.

Developers have lost millions of users since Facebook cut back on viral communications on the network in the name of reducing spam. Today, Facebook sought to appease developers by enhancing its platform to be more game friendly. The top Facebook brass talked to a group of game developers tonight at Facebook’s headquarters in Palo Alto, Calif.

After their speeches, Facebook chief executive Mark Zuckerberg, product manager for games Jared Morgenstern, and platform marketing chief Dan Rose answered questions. Notice there was one somewhat testy question about Facebook Credits and Facebook’s 30 percent share of all virtual currency transactions.

Here’s a full video of the question-and-answer session.

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