Publicado originalmente por fluxtorrent:

Way it works:

Your library.
Your playtime counts towards your refund, but no one elses.
Playtime of your family while they are sharing it FROM your library counts towards your refund time and theirs.

Publicado originalmente por Zenthon9:

I have a doubt with something.

Let's say I purchase a game and play it for 90 minutes before requesting a refund. If someone else later buys that same game, does my 90 min of playtime affect their eligibility for a refund? Or is their playtime tracked independently, as if my usage never occurred?

What can I request a refund for?
Valve will, upon request via steamhost.cn/help_steampowered_com, issue a refund for any title that is requested within 14 days of purchase and has been played for less than 2 hours (this includes online, offline and shared library playtime). Even if you fall outside of the refund rules we've described, you can submit a request and we'll take a look at it. Please review our Refund Policy for more information.