So, I currently have a key that I still have from the Tower Unite Backer Panel. Since my computer is died, I can’t really redeem at the moment. Will it ever expire? I don’t know when I’ll get a new PC.
(If there is a way to redeem a Steam product key on mobile, I would be happy to know how 
)
I do not think that Steam Keys expire.
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Steam keys do not expire. However, they can be redeemed to only one Steam account and will always be associated with that Steam account.
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