"Disney Infinity (2.0 Edition) for PC is now available for you to download and play for free! The PC game is the same game you’d find on your console at home, but now you can buy or redeem your Starter Packs, Play Sets and characters digitally!
Play demos of all three Marvel Super Heroes Play Sets and keep checking back because we’ll be rotating through different characters that you can try for free as well. Plus, participate in a PC-exclusive feature, the Daily Challenge, which randomly generates a new set of levels of every day for you to test your abilities.
To experience all the PC game has to offer, use your web code cards to download your Starter Pack, Play Sets and characters and log into your Disney Account to access all of your Toy Boxes.
And don’t forget to get your friends to join in all the fun with the Friend Rewards program! Recruit fellow PC players and you could earn free digital characters and more!"
Source: Disney Infinity Team