If you are a Kickstarter Backer at Tier 2 or above you will have received a digital game key as part of your rewards.
If you never received a key or have lost your key before redeeming it you can use the Humble Order Resender to resend your original digital reward. Simply enter your Kickstarter email (that you used at the time your pledge was completed) and click the resend button.
You should then receive an email with details of your rewards. You can find instructions on how to redeem a steam key here.
If you have a further issue with your key please contact us directly via our general help & support private message system.
Customer support service by UserEcho