Depending on where you purchased the game, you can retrieve your keys in the following ways:
Humble Store: (Amazon, Paypal)
When you purchase Don't Starve through the Humble Store or from the official Don't Starve site, you will be sent an email that contains a unique URL allowing you to claim your game key (the key works on Steam and Standalone) and a download for the Standalone installer.
Where is my email?
If you either A) mistype the email address or B) type in a different email address than you think you used to purchase, you might miss the purchase email confirmation.
If that happens, your best, next step is to check any possible email address (and spam box) to see if you can find the Humble Store email confirmation.
You can also go to the Humble Bundle re-sender tool to request for the purchase confirmation email to be re-sent to the email address you used to purchase the game: https://www.humblebundle.com/?s=resender
If for some reason you are still having trouble retrieving your game key or account, contact customer support with your account information and/or your transaction information and we can help you out.
Chrome Web Store: (During the Don't Starve Early Beta)
If you purchased from the Chrome Web Store using Google Wallet, then the account you were logged into when you made the purchase was flagged for access, and your "key" was already consumed.
Where is my email?
The account that was used to purchase through Google Wallet received an email that contains the Google Order Number. If you do not get this email, you can visit your payment history in http://wallet.google.com to confirm the purchase.
Once you confirm the account that you used to purchase the game, check that email address' inbox and spam box for the confirmation email. If you cannot find this email, please contact us with your Google order number, your Amazon Transaction Reference Number or your PayPal Transaction ID and we will do what we can do help you out.
You can get your Amazon transaction reference number here:
Paypal transaction information can be found here:
Where is my Steam key?
If you purchased Don't Starve through the Chrome app during the early beta and were not able to translate your Chrome key into a Steam key, contact us directly at email@example.com with your order number and the email address you used to purchase the game.