First of 2020: Scooby-Doo Night of 100 Frights, I always play this game as a warm-up for any other games I play today. It's either this or Crash Bandicoot: The Wrath of Cortex.
The last game I played in 2019 was Yooka-Laylee and the Impossible Lair. The first game I played in 2020 is The Legend of Zelda: Link's Awakening (Switch version).