Buy more games, idle more cards.

http://psteamcommunity.yuanyoumao.com/tradingcards/faq
Is there a limit to how many trading cards can drop?
Most games will drop a number of cards equal to about half the number of cards in that game's set of cards. For example, Half-Life 2 has 8 cards in its set, you can receive 4 card drops by playing it. You'll need to collect the other half of the set from other community members. Try the beta group discussions, community market, barter with friends, and trade discussions. You can check how many drops you have remaining on your badges page.

You can check your available drop here > https://psteamcommunity.yuanyoumao.com/my/badges/

引用自 MrL0G1C：

ASF can idle multiple steam accounts at once.

This.
If you have 1 account - use IM, if you have more - use ASF.

引用自 LOLYOU1337：

so i still get cards right ?

Check here > https://psteamcommunity.yuanyoumao.com/my/badges/

For example - CS:GO app ID is 730. Check the store link > steampowered.com/app/730 and you'll see it ;)

引用自 F1ReB4LL：

Idle Master was ignoring it

Because of this > http://psteamcommunity.yuanyoumao.com/my/gamecards/365170/

IM can idle cards from games or movies if they present in your badge page dude. It's not IM fault.

引用自 F1ReB4LL：

It's not a free subID.

Sure thing :D
http://psteamcommunity.yuanyoumao.com/my/gamecards/365170/
http://i.imgur.com/3DudIcb.png

引用自 F1ReB4LL：

it's a temporary giveaway.

Yes, free subID can't drop cards.

You can't get cards from f2p content.

Количество доступных карточек для дропа можно увидеть тут > https://psteamcommunity.yuanyoumao.com/my/badges/
Если ничего нет > покупаем больше игр > получаем из них карточки.
Из F2P не падает без доната.