Turbine announced the closure of the game earlier today.

In a brief post earlier today it was announced that Infinite Crisis will be closing its doors on August 14, 2015.

After much deliberation, we regret to announce the official shutdown of Infinite Crisis. We will end development efforts today and will close the service on August 14, 2015.

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Between now and August 14th, the game will remain available to play completely free. If you have any questions, contact Customer Service for assistance at http://support.infinitecrisis.com.

This was an extremely difficult decision to make. On behalf of the entire Infinite Crisis team we want to thank all of you for your feedback, support and for joining together to create one of the best communities in gaming.