"consist in playing" is correct and usable in written English.
You can use it to indicate that a certain activity is a part of an overall activity or situation. For example, "The fun at the party consisted in playing a variety of outdoor games."
Watson's DNA breakthrough consisted in playing with a four-piece cardboard minimal jigsaw as a proxy for the four bases of DNA: a laboured pun, but it unlocked the secret of the molecule's crystal structure.
The experiment consisted in users playing videogames as well as performing traditional psychological assessments; during these tasks the frontal brain activity was evaluated.
An agent's control consists in her playing a crucial role in the production of her actions.[12] Think in terms of the transparent difference between those events that are products of one's agency and those that are merely bodily happenings.
Their days consist of playing in different areas, depending on the weather, interacting, and doing different activities.
(His brief tour consisted of playing baseball in Hawaii).
I had a history of stomach problems growing up, so when I wanted to skip school and avoid a test after a particularly booze-heavy weekend (in beautiful Delaware our weekends usually consisted of playing "cops and robbers" in the fields, making silly movies, drinking warm beer we stole from the garage, or some combination of the three), I had a solid excuse.
Her years in rep had mostly consisted of playing dizzy blondes, busty typists and maids.
Seventy percent of a child's life should consist of playtime: playing teaches you how to live in the world," he explains.
The sparse outfield consisted of Angel Pagan playing in straightaway center field and Jeff Francoeur in right, where Zimmerman hit the ball to a medium depth.
The Family Values Tour with Korn and Evanescence, saw the band start touring in late July, which also consisted playing with Alter Bridge in San Antonio before passing through thirty cities before ending in Washington, D.C.
One awkwardly blocked scene consists of Madea (played by Tyler Perry in drag) sitting in her straight-laced nephew Brian's living room (Brian is also played by Perry) with her brother Joe Perryy in a white wig) and her two pals Aunt Bam Cassi Daviss) and Hattie (Patrice Lovely), and the four elders riff on "whoopin' ass" for what feels like forever.
