Nowadays, I've been seeing promotions that involve two types of codes; a global code (ie.
HAPPY-2015)1 and a unique code (ie.
I know that these global codes expire as the expiry date is always stated with their post.
However, there isn't any information about unique ones.
1 These codes can be used once per account in the given timeframe.
2 These codes can only be used once on one account.
I've bought a
code through Humble Bundle (Bundle ended, page is out-of-date) and received another as part of the Curse promotions.
I haven't used either of them and I was wondering: Do they ever expire?