Here is the key for the closed Beta test. It will run from 5:00pm PDT Friday April 26th, 2013 through 11:59pm PDT Sunday April 28th, 2013.
Please follow the following steps to enable your Marvel Heroes account for Beta access this weekend::
Start by Registering a new account if you don't already have one. If you have already created an account, please log into your Account Summary page (click "Profile" from the MarvelHeroes.com homepage).
Once your account is created (or logged), click on Redeem Key on the right side.
Enter your Beta Key: 4A2A-2LC1-N2P5-DII3
Note: The code above can only be redeemed once, please do not share it. Once redeemed, click on My Downloads to download the Marvel Heroes Game Installer.
Visit the Official ForumsOfficial Forums to join other players of Marvel Heroes and get the latest information on the game, including playtest times. Access to the forums will end when the playtest ends.
Have fun! =)