First of all, I don't have a Nintendo Switch *yet*, but I couldn't wait to jump into the homebrew bandwagon. So here it is, tetriswitch.
@Ryuzaki_MrL has released his homebrew tetris clone for the exploitable Nintendo Switch consoles, check it out below:
Grab it now from his Project Site: --> https://github.com/Ryuzaki-MrL/tetriswitch/releases
NEWS SOURCE: tetriswitch: a tetris clone for the switch (via) GBATemp