Glitch, unfortunate. Restart steam and idle master, keep an eye on your profile to make sure steam is acknowledging the game is playing.

Ignore app statistics, the app is buggy.

@MrL0G1C - Thanks man.

PS, best farming method I've used so far:

Step 0, idle games individually for 6 minutes each (not a second less).
Step 1, Idle games together until they all show as played for 30 min's on steam library page.
Step 2, Idle games for 1 minute each.

Repeat steps 1 and 2 (cards drop for me after 0,30,60,90 etc minutes)

It varies from game to game, and different strategies seem to work differently for different people, steam appears to be be stricter with some people than others. Refunding a game causes 2 hour wait before card drops. If method above doesn't work then you likely have restriction.

And if you don't get for example get Duke Nukem second card drop at 60 minutes then repeat step 2, but just skip through the cards which did drop at 60 minutes.

That's a lot of information, thank you so much!
I'll be sure to +rep your profile.

As for your farming tips -
I can see the point behind Steps 1 and 2 and their subsequent repetition.

How did you figure out the exact 6 minute step, though?
Are you a dev?

引用自 sayan.altair：

That's a lot of information, thank you so much!
I'll be sure to +rep your profile.

As for your farming tips -
I can see the point behind Steps 1 and 2 and their subsequent repetition.

How did you figure out the exact 6 minute step, though?
Are you a dev?

Trial and Error. He's just a user who got roped into mod position by being obnoxiously "present" for every thread

The only dev is Jshackles, the admin of the group.

Yes, trial and error and there might well be room for improvement and you could find a system that works better for you.

And, make that 5 minutes, not 6!

Oh, I see.
Thanks anyway.

And 5 minutes it is.

At the end of the day, even ASF and Idle Master Devs don't know exactly how the Steam card drop algorithms work.