To qualify you must first own at least one Qubic game, and Coloring Book, at the link below, is free and counts as the game:
https://www.nintendo.com/games/detai...g-book-switch/

Download Robonauts for free between 12/10 and 12/15:
https://www.nintendo.com/games/detail/robonauts-switch/

They will have new games available each day starting December 16, including:
Geki Yaba Runner
https://www.nintendo.com/games/detai...dition-switch/
Puzzle Book
https://www.nintendo.com/games/detai...e-book-switch/
One Strike
https://www.nintendo.com/games/detai...strike-switch/
Wreckin’ Ball Adventure
https://www.nintendo.com/games/detai...enture-switch/
Koloro
https://www.nintendo.com/games/detail/koloro-switch/
#RaceDieRun
https://www.nintendo.com/games/detai...dierun-switch/
Rekt
https://www.nintendo.com/games/detai...stunts-switch/
Mana Spark
https://www.nintendo.com/games/detai...-spark-switch/
and a Mystery Game for the last game.