Prayko is a Bajoran game that is played in a prayko alley.
In 2323, Dennit was to join Proka Migdal in a game of prayko. (TLE - Terok Nor novel: Day of the Vipers)
In 2373, Leeta commented to Lewis Zimmerman that, if she ran Quark's, she would have two prayko alleys in the bar. (DS9 episode: "Doctor Bashir, I Presume")