Vingt-un better than Commerce;

I don't understand what is the meaning of:
Vingt-un better than Commerce;

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from: Proud and Prejudice
"Yes; these four evenings have enabled them to ascertain that they both like Vingt-un better than Commerce; but with respect to any other leading characteristic, I do not imagine that much
has been unfolded."
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Thanks for helping me.
Mircea

NB - "Pride and Prejudice"

Both were card games, popular at the time.

See here: Jane Austen: Pride and Prejudice -- Notes on Random Topics

Thanks for all.
Mircea