https://www.cyberpunkreview.com/cyberpunk-games/a-look-into-some-of-2021s-most-popular-games
Of course with the ending of 2021, various people have made their lists of favorite games.
https://www.gameinformer.com/2021/12/30/here-are-steams-most-played-games-of-2021
No list should be identical, because everyone has their preferences.
https://www.theguardian.com/culture/2021/dec/23/the-15-best-video-games-of-2021
https://twinfinite.net/2021/12/most-played-games-in-2020-ranked-by-peak-concurrent-players/
https://www.gamesradar.com/best-games-2021/
https://www.ign.com/articles/steam-reveals-its-best-selling-and-most-played-games-of-2021
https://gamerant.com/steam-best-selling-most-popular-games-2021/
https://www.polygon.com/22855533/best-steam-games-2021-pc-top-selling-most-played
https://ftw.usatoday.com/2021/12/steam-most-popular-games-2021
The 2021 Game Awards https://www.youtube.com/watch?v=mfciMwRcI5w , https://www.youtube.com/user/gameranxTV/videos