http://psteamcommunity.yuanyoumao.com/groups/idlemastery/discussions/0/152392786912268315/

http://psteamcommunity.yuanyoumao.com/groups/idlemastery/discussions/0/152392786912268315/

http://psteamcommunity.yuanyoumao.com/groups/idlemastery/discussions/0/152392786912268315/

https://support.steampowered.com/kb_article.php?ref=3330-IAGK-7663

http://psteamcommunity.yuanyoumao.com/tradingcards/faq

https://psteamcommunity.yuanyoumao.com/my/badges/
http://psteamcommunity.yuanyoumao.com/tradingcards/faq

IM can't be approved by Valve.

引用自 Master Dr. of the Big Game Hunt：

super helpfull thanks m80

NP dude.
Card drop rate algorithm is unique for each user and each steam game. You can idle games for two hours, then idle them one by one, or use well known IM bug with changing games each 5-10 seconds. Enjoy ^_^

No one knows.

引用自 Lrig Lana：

And how many time individually?

No one knows.