If you’ve purchased any games on itch.io and are potentially worried about losing your download access then you don’t have to worry any more. You can now request all your download URLs to be sent to your email address from the support page: http://itch.io/about/support

When you buy a game on itch.io the purchase is associated with the email address you bought it with. As long as you have access to that email address you can request your download URLs at any time.

Enjoy