Oh my. This looks like a permanenet discussion point.Write "We play cards." : Nous ________ cartes .jouons aux
"Nous jouons aux cartes" could mean we are playing cards or refer to a specif time they play cards.
Could one say " Nous faisons des cartes" in answer to a general question about whether or not a family or group know how to play cards? They coud actually be learning to play bridge for example.