First, you need to have four phone number and four google account or facebook account

Register Here: https://gameflip.com/
Connect your Google account or facebook account then use this code if you like 5TWC7E :)
Verify your account (Phone Verification)

Then create another account with different phone # and Google / Facebook account
Just put your Invitation Code then Verify your Phone number (Now you have $1)
Just repeat this step until you earn $3 to buy steam key! :D