Gravity Memory

It's the card game Memory, but the cards are all falling through the air. You have to stop them from falling while you play. The card designs are inspired by Aesop Rock's old Snapchat stories; they had a similar witchy feel.

If this is really easy for you, please share your secrets (really do). This is full-on impossible for me after 12 cards.

I made it in vanilla javascript, using matter.js. Can be found on github.

Click cards to stop them from falling. Match like cards to clear them.
'q' to knock all cards upwards.
'+' to increase the number of cards.
'-' to decrease the number of cards.
'w' if you don't like the pictures.